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0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
neutral
plain
a mathematical element that when added to another number yields the same number
null
true
[]
0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
grade_1
plain
Add it to a number. The number stays the same.
0.52
false
[]
0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
grade_5
plain
A number that keeps another number the same when you add it.
4.82
false
[]
0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
grade_10
plain
A number that leaves any other number unchanged when added to it.
6.79
false
[]
0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
college
plain
An additive identity is an element that leaves any number unchanged under addition.
13.08
false
[]
0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
neutral
informal
It’s the number that leaves whatever you add it to just as it was.
4.2
false
[]
0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
neutral
formal
The number whose addition to any other number preserves that number’s value.
8.76
false
[]
0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
neutral
technical
The additive identity is the number that maps every number to itself under addition.
12.63
false
[]
0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
neutral
marketing
The number that lets any other number keep its full value when they’re added.
5.88
false
[]
0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
grade_5
informal
Put zero with any number, and you still have that number.
4.79
false
[]
0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
grade_5
formal
When zero is added to a number, the number does not change.
4.82
false
[]
0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
college
informal
Add zero to any number, and its value stays put.
3.65
false
[]
0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
college
formal
Zero is the additive identity: combining it with any number preserves that number’s value.
11.78
false
[]
0:noun:0
0
0
noun
0
everyday_life.quantity_time
tier5
college
technical
Zero is the additive identity for numbers: addition by zero leaves every number invariant.
14.31
false
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
neutral
plain
indicating the absence of any or all units under consideration
null
true
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
grade_1
plain
Showing that there are no things being counted.
2.28
false
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
grade_5
plain
Showing that none of the counted items are present.
4.96
false
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
grade_10
plain
Indicating that none, or possibly all, of the units being considered are present.
9.45
false
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
college
plain
Indicating the absence of any units under consideration, whether the relevant set is wholly or only partially specified.
15.69
false
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
neutral
informal
Shows that there aren’t any items in the group being counted.
4.79
false
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
neutral
formal
Denotes the absence of units in the quantity or set under consideration.
10.72
false
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
neutral
technical
Represents a cardinality of zero for the units included in the relevant set.
12.17
false
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
neutral
marketing
Makes an empty count instantly clear, showing that the quantity contains no units.
8.54
false
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
grade_5
informal
A sign that says your group has no things in it.
0.5
false
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
grade_5
formal
A mark showing that none of the items being counted are present.
4.82
false
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
college
informal
A sign that the count contains no units, whether the set includes every item or only selected ones.
9.79
false
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
college
formal
A symbol denoting the absence of units from the set under consideration, in whole or in part.
10.48
false
[]
0:adjective:0
0
0
adjective
0
mathematics.arithmetic
tier5
college
technical
A numeral denoting that the cardinality of the specified set is nil, whether the set comprises all units or only selected units.
13.91
false
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
neutral
plain
the smallest whole number or a numeral representing this number
null
true
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
grade_1
plain
It is the first number we say when counting. We write it with one straight mark.
0.8
false
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
grade_5
plain
This is the first number in a count, shown by one written mark.
3.1
false
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
grade_10
plain
This is the first counting number, represented in writing by the numeral 1.
8.54
false
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
college
plain
The first positive integer in the counting sequence, represented by the numeral 1.
11.26
false
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
neutral
informal
It’s the number you get when you start counting, and its written mark.
4
false
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
neutral
formal
This quantity is the initial member of the whole-number sequence and is denoted by a single numeral.
11.75
false
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
neutral
technical
The least positive integer, denoted by the corresponding base-ten digit.
11.23
false
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
neutral
marketing
Every count starts here: one clear mark opens the door to the numbers that follow.
5.99
false
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
grade_5
informal
It’s the first amount you count, and the mark you write for it.
2.19
false
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
grade_5
formal
This is the starting number in a count, also written as a single mark.
5.88
false
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
college
informal
It names the opening position in a count and the numeral used to record that value.
7.61
false
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
college
formal
The unit quantity at the beginning of the positive whole-number sequence, conventionally recorded with a single digit.
15.03
false
[]
1:noun:0
1
1
noun
0
everyday_life.quantity_time
tier5
college
technical
The initial positive integer in the counting sequence, also expressed by the base-ten numeral 1.
11.3
false
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
neutral
plain
used of a single unit or thing; not two or more
null
true
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
grade_1
plain
It means there is just one thing, not more.
-0.28
false
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
grade_5
plain
It describes one person or thing, rather than a group.
3.65
false
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
grade_10
plain
It refers to exactly one person, object, or unit, rather than multiple ones.
9.45
false
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
college
plain
It denotes a single entity or unit, excluding any quantity greater than one.
11.26
false
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
neutral
informal
It means there’s only one, not a bunch.
0.8
false
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
neutral
formal
Applied to a unit or object that occurs singly, rather than in a plurality.
8.41
false
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
neutral
technical
Specifies cardinality of one for a unit or entity, excluding quantities greater than one.
11.78
false
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
neutral
marketing
For the one item that stands on its own, not a group.
1.87
false
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
grade_5
informal
It means you’re talking about one thing, not a bunch of things.
2.86
false
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
grade_5
formal
It describes one thing by itself, not a group.
2.34
false
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
college
informal
It’s for a lone item or entity, not a collection or multiple instances.
9.45
false
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
college
formal
Indicates that the referent is singular in number, with no plurality implied.
10.72
false
[]
1:adjective:0
1
1
adjective
0
everyday_life.quantity_time
tier5
college
technical
Indicates that the referent has cardinality one, rather than a value greater than one.
10.1
false
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
neutral
plain
the cardinal number that is the sum of nine and one; the base of the decimal system
null
true
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
grade_1
plain
It is one more than nine. People count with it in groups of ten.
-0.22
false
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
grade_5
plain
It is one more than nine. It is the base, or starting number, of our usual counting system.
3
false
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
grade_10
plain
It is the number that comes after nine and forms the foundation of the decimal system.
7.61
false
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
college
plain
The natural number obtained by adding one to nine and serving as the radix of the decimal numeral system.
11.07
false
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
neutral
informal
It’s what you get by adding nine and one, and the count that gives our ten-based notation its shape.
5.78
false
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
neutral
formal
The quantity formed by combining nine with one, and the foundation on which decimal notation is based.
9.78
false
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
neutral
technical
The natural number immediately following nine, equal to their sum with one, and the radix of base-ten numeration.
12.31
false
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
neutral
marketing
The number that completes the first full count and unlocks the familiar rhythm of counting in tens.
7
false
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
grade_5
informal
Add nine and one, and you get it. Our usual counting system groups numbers by it.
2.28
false
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
grade_5
formal
This number follows nine in the counting sequence. Decimal notation organizes quantities in groups based on it.
7.85
false
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
college
informal
It’s the total of nine plus one, and the radix that makes place-value notation decimal.
6.88
false
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
college
formal
The integer succeeding nine, equal to their sum with one, and the radix governing decimal place-value notation.
11.1
false
[]
10:noun:0
10
10
noun
0
everyday_life.quantity_time
tier5
college
technical
The natural number represented by the decimal numeral 10, equal to 9 + 1 and serving as the radix of decimal notation.
13.95
false
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
neutral
plain
being one more than nine
null
true
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
grade_1
plain
The number you get when you count past nine.
1.03
false
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
grade_5
plain
The number that comes after nine when you count.
2.34
false
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
grade_10
plain
The whole number that follows nine in the counting sequence.
6.01
false
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
college
plain
The natural number succeeding nine in the standard counting sequence.
9.55
false
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
neutral
informal
The number you say right after nine when counting.
3.65
false
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
neutral
formal
The cardinal number immediately succeeding nine.
16.25
false
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
neutral
technical
The integer whose value is the successor of nine.
4.96
false
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
neutral
marketing
The next step up from nine in the count.
-0.28
false
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
grade_5
informal
It's the number you get by adding one to nine.
2.47
false
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
grade_5
formal
The number equal to the sum of nine and one.
2.47
false
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
college
informal
It’s nine with one more added, the next whole number in the count.
4
false
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
college
formal
The cardinal number immediately greater than nine in the natural-number sequence.
12.69
false
[]
10:adjective:0
10
10
adjective
0
mathematics.arithmetic
tier5
college
technical
The integer obtained by adding unity to nine, and the successor of nine in the ordered natural numbers.
11.1
false
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
neutral
plain
ten 10s
null
true
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
grade_1
plain
It means ten groups of ten.
-1.45
false
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
grade_5
plain
It means ten groups with ten things in each group.
0.11
false
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
grade_10
plain
This number represents ten groups of ten, for a total of one hundred.
4.91
false
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
college
plain
The cardinal number equal to the product of ten and ten, and to one hundred.
5.99
false
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
neutral
informal
That's ten sets of ten, making a hundred altogether.
4.96
false
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
neutral
formal
The quantity obtained from ten groups of ten is one hundred.
3.72
false
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
neutral
technical
The natural number produced by multiplying ten by ten, equivalent to one hundred.
9.45
false
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
neutral
marketing
A full hundred: ten neat groups, each holding ten.
1.03
false
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
grade_5
informal
Ten rows with ten objects apiece make this number.
3.65
false
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
grade_5
formal
A count of ten, repeated across ten equal groups, gives this total.
5.81
false
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
college
informal
It’s the number you get by multiplying ten by itself.
4.83
false
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
college
formal
The integer produced by multiplying ten by ten, denoting a quantity of one hundred.
9.26
false
[]
100:noun:0
100
100
noun
0
everyday_life.quantity_time
tier5
college
technical
In base ten, 100 denotes the cardinal quantity obtained by summing ten groups of ten units.
8.35
false
[]
100:adjective:0
100
100
adjective
0
mathematics.arithmetic
tier5
neutral
plain
being ten more than ninety
null
true
[]
100:adjective:0
100
100
adjective
0
mathematics.arithmetic
tier5
grade_1
plain
The number you get when you add ten to ninety.
3.65
false
[]
End of preview. Expand in Data Studio

OpenGloss v2.4 — Definitions

The flat definition view: one row for every stored rendition of every live sense's definition, the canonical (neutral, plain) gloss included. This is the reading-level and register grading of OpenGloss v2.4 laid out one row at a time, which is the shape most training and analysis code wants. Join back to opengloss-v2.4-senses on sense_id.

Part of the OpenGloss v2.4 release family — 16 datasets built from one store of 160,724 lexemes and 300,787 live senses, all joinable on derived ids. See Related datasets for the rest.

What's new in v2.4 vs v1.3

  1. Schema v3. Every lexeme carries a kind discriminator (simplex, compound, phrasal verb, idiom, proper noun, abbreviation, affix, function word); every sense carries a controlled domain leaf from a fixed ~160-leaf taxonomy instead of free text; every example carries the character span of the headword occurrence inside it.
  2. Renditions, not one string. A definition is a set: the canonical one plus rewrites at four reading levels and in four registers, each produced in a single call from the canonical text so they say the same thing at different altitudes.
  3. A sense graph, not a word graph. Typed relations resolve to sense ids wherever the target's entry exists in the release, so bank --hypernym--> financial institution points at a meaning rather than at a string.
  4. Retrieval data is first-class. Synthetic per-sense queries in eight styles, grounded QA pairs, mined word-in-context pairs, MS MARCO-style triples with graph-derived hard negatives, and graded TREC qrels — all derivable from, and consistent with, the same entries.
  5. Derivable identifiers everywhere. v1.3 published a positional id for lexemes and senses (3d_model_noun_0) and nothing below that. v2.4 gives every rendition, edge, query, QA pair and provenance record an id computable from the row alone, and never renumbers: a retired sense is tombstoned, so the ids after it keep their meaning.
  6. Per-field provenance. Which model wrote a field, how many tokens it took, what it cost — published as its own dataset.

What changed since v2.3

v2.3 (2026-09-09) added tier 6, named entities. v2.4 adds no new headwords: it fills in the supervision the lower tiers never received and makes every reading level of the pretraining corpus carry text of its own.

  • Retrieval supervision for every sense. Tiers 3-6 (about two thirds of all senses) had no search queries, QA pairs, register variants or contrast paragraphs in v2.3; those existed only for core and tier 2. Every live sense now has search queries in eight styles (twelve per sense; 85% of all queries never name the headword), 99.7% have grounded QA pairs, and every tier has register variants, register-crossed examples and contrasts.
  • Verified word-in-context examples everywhere. The sense-disambiguated example stage (eight checked sentences per sense) ran only on tier 2 in v2.3; it now covers core and tiers 3-6 as well.
  • Leveled register text. Every sense gains five definitions crossing reading level and register (grade 5 informal and formal; college informal, formal and technical); every contrast paragraph gains a grade-5 and a college version; every lexical explanation gains a grade-5 and a college version.
  • A pretraining corpus with no copies. v2.3's thesaurus and usage-note documents at grade_5 and college were byte-identical to neutral (25% of all pretraining documents). A non-neutral document is now emitted only when it carries text written at its level and differs from the neutral one, and the export fails if any two documents share text. The thesaurus template gains a "Choosing between them" section of leveled contrast notes (moved from the usage note), and the usage note lists the register variants written at the document's level.
  • Graph repair. Relations were regenerated for senses that had none (senses without a relation fell from 4,722 to about 1,600), re-resolved, re-judged, and hypernym cycles broken back to zero.
  • Writer. New v2.4 text was written by gpt-6-luna (low reasoning); v2.3's by gpt-5.6-luna. The provenance repo records the model of every call.
v2.3 (2026-09-09) v2.4
Lexemes 160,724 160,724
Live senses 300,787 300,787
Search queries 1,249,683 3,851,978
QA pairs 704,950 2,304,127
Definition renditions 1,919,007 4,209,494
Example renditions 2,421,809 4,939,887
Encyclopedia renditions 500,320 802,914
Lexical-explanation renditions 160,724 482,172
Contrast paragraphs (all levels) 81,046 812,184
Unique source-text tokens (16K student tokenizer) 697,553,973 1,461,832,309
Pretraining documents 1,560,030 1,910,373
Pretraining words 418,161,358 483,649,976
Pretraining tokens (cl100k_base) 594,154,612 676,733,509
Exact-duplicate pretraining documents 25.0% 0 (the export fails on any duplicate)
Judge score, Opus, 40-entry samples 70.2 (core + tier 2), 66.7 (tier 3), 67.0 (tier 4), 81.3 (tier 5), 73.0 (tier 6) 64.8 (core), 69.9 (tier 2), 65.8 (tier 3), 68.1 (tier 4), 79.6 (tier 5), 71.3 (tier 6)

Schema. No column was removed or retyped. pretrain gains sections_at_level; level_used gains the value mixed (some leveled sections fell back to neutral text); non-neutral pretraining documents with no text of their own at their level are no longer emitted, and retired lexemes (no live sense) emit no pretraining document. contrasts now carries grade_5 and college rows beside neutral.

Known issues. Leveled informal definitions open with "It's a / It's the / It's when" about 18% of the time. About 1.1% of QA answers are exact duplicates of another QA answer (mostly short answers). Listwise qrels lists that contain all four grades fell as a share, because tier 3-6 senses joined with fewer grade-2 neighbours.

What changed since v2.2

v2.2 (2026-09-07) added tier 5, the WordNet 3.0 gap. v2.3 adds tier 6: named entities. Every tier before it was selected by word frequency or by WordNet membership, and neither signal ranks a name — a name's importance is a fact about the world, not about a corpus — so v2.2 knew Washington and Lincoln but not George Washington, New York City or World War II. Tier 6 is 15,000 candidates ranked by Wikipedia vital-article level, Wikidata sitelink count, WordNet instance membership and US salience, of which 12,078 became entries. Three schema changes come with it:

  • Entity types are written rather than defaulted. Every proper noun in v2.2 carried entity_type = other, because the two migrations and the kind classifier all wrote that placeholder and nothing ever replaced it. 28,915 proper nouns now carry a real type — person, place, organization, work, event, product, species — taken from the candidate list where it knew one and bought as a single batched verdict where it did not. lexicon and senses gain an entity_type column, and lexicon gains wikidata_qid, the join key for reconciling an entry against Wikidata.
  • Aliases. A name has variants — Lincoln for Abraham Lincoln, the Netherlands for Netherlands, FDR, NASA — and v2.2 had nowhere to put them. A variant that has an entry of its own is now an alias_of edge in opengloss-v2.4-relations (1,267 of them, written by a judged alias pass). The schema also reserves a lexicon.aliases column and alias rows in opengloss-v2.4-inflections for variants with no entry of their own, but no pass populates them yet: aliases is empty on every v2.4 row. An alias_of edge is never demoted, pruned, capped or re-judged by the hygiene passes, unlike every other relation type.
  • Two new domain leaves. nature.settlements (cities, towns, villages, neighbourhoods) and law_government.polities (countries, states, provinces, empires, historical polities). A quarter of tier 6 is a settlement or a polity and the taxonomy had no leaf for either; adding a geography root would have been a breaking change to a fixed 15-root vocabulary, so both went under roots that already exist.
v2.2 (2026-09-07) v2.3
Lexemes 148,292 160,724
Live senses 288,304 300,787
Tier 6 lexemes (named entities) 0 12,078
Pretraining documents 1,458,684 1,560,030
Pretraining words 398,029,628 418,161,358
Pretraining tokens (cl100k_base) 565,384,746 594,154,612
Judge score, Opus, 40-entry samples 70.2 (core + tier 2), 66.7 (tier 3), 67.0 (tier 4), 81.3 (tier 5) 70.2 (core + tier 2), 66.7 (tier 3), 67.0 (tier 4), 81.3 (tier 5), 73.0 (tier 6)

Schema. No column was removed or retyped. lexicon gains entity_type, wikidata_qid and aliases; senses gains entity_type; relations gains the alias_of type; inflections gains the alias relation; tier gains the value tier6; and the domain taxonomy gains two leaves (taxonomy version 3).

What changed since v2.1

v2.1 (2026-09-07) added tier 4 and the inflections repo. v2.2 adds tier 5: 43,652 WordNet 3.0 candidate lemmas the earlier tiers lacked — common compounds and technical nouns, adjectives, adverbs and verbs, instances/taxa/organisms excluded — 38,526 of them imported outright, the rest matched against v1.3's own files. The other three changes are about honesty rather than coverage:

  • The lemma fold. lexeme-hygiene (D-79) folded 4,377 inflected-form headwords onto the lemma that already carried their meaning ("databases" onto "database", through the store's own recorded morphology) and retired 172 multiword fragments that began or ended on a function word ("is not", "on top of"). Together with D-76's phantom part-of-speech retirements, 4,549 lexemes store-wide now have every sense tombstoned. A lexeme like that is not counted as a lexeme anywhere in this card or in Stats any more — it has no live sense, so it is not a lexeme by this release's own count — but it is not gone: its surface form still resolves through opengloss-v2.2-inflections, and its lexicon row carries retired = true with a retired_reason explaining why.
  • Provenance on inherited fields. Every field a migration or import wrote, not only what a model wrote from scratch, now carries a migrate-stage provenance record naming where it came from, so "where did this text come from" is answerable by grep rather than by trusting the pipeline that happened to run.
  • A source column on lexicon and senses: opengloss-v1.3 for content this project generated or migrated from its own legacy releases, wordnet-3.0 for the tier-5 entries imported directly from Princeton WordNet 3.0.
v2.1 (2026-09-07) v2.2
Lexemes 109,633 160,724
Live senses 250,003 300,787
Tier 5 lexemes (WordNet gap) 0 43,227
Retired lexemes (every sense tombstoned) 0 4,567
Pretraining documents 1,111,044 1,458,684
Pretraining words 331,888,239 398,029,628
Pretraining tokens (cl100k_base) 471,451,693 565,384,746
Judge score, Opus, 40-entry samples 70.2 (core + tier 2), 66.7 (tier 3), 67.0 (tier 4) 70.2 (core + tier 2), 66.7 (tier 3), 67.0 (tier 4), 81.3 (tier 5)

Schema. No column was removed or retyped. lexicon gains source, retired and retired_reason; senses gains source; tier gains the value tier5.

What changed since v2.0

v2.0 (2026-09-05) covered the frequency-ranked single words. v2.4 adds tier 4: the function words the core ranking had excluded on purpose, and every remaining v1.3 entry at Wikipedia frequency ≥ 10 — mostly multiword compounds ("natural selection", "catalog number"), plus names and rarer single words. That doubles the lexeme count and changes the mix: v2.0 was 99.8% single words; a third of v2.4 is multiword.

v2.0 (2026-09-05) v2.1 (2026-09-07)
Lexemes 54,724 109,633
Live senses 137,314 250,003
Multiword entries (compounds, phrasal verbs, idioms) 86 36,366
Proper nouns 10,365 17,073
Function words 114 462
Gloss renditions 1,129,975 1,684,865
Example sentences 1,398,297 2,163,329
Live relations 735,318 1,574,438
Synthetic queries 1,330,311 1,304,650
QA pairs 750,348 736,010
Pretraining documents 617,175 1,111,044
Pretraining words 196,390,946 331,888,239
Pretraining tokens (cl100k_base) 275,659,096 471,451,693
Judge score, Opus, 40-entry samples 70.2 (core + tier 2), 66.7 (tier 3) 70.2 (core + tier 2), 66.7 (tier 3), 67.0 (tier 4)

Schema. No column was added, removed or retyped in any existing dataset. Three things did change:

  • tier gains the value tier4 (it was core, tier2 or tier3).
  • One new dataset, opengloss-v2.4-inflections: a flat surface-form → lemma lookup (plural, past tense, participles, comparative, superlative, derivations) built from the morphology that the lexicon already carried nested.
  • New provenance note prefixes on tombstones and edges, all reversible and all counted in the store audit: phantom_pos: (a v1.3 part-of-speech block whose glosses defined a component word rather than the compound — 11,440 blocks retired), regen: (relations regenerated for senses that had lost every edge to judging), and retyped: contrast (synonym edges the contrast paragraphs showed to be hypernym or hyponym).

Not row-compatible with v2.0. Lexeme, sense, rendition, edge, query and QA ids are stable for every entry v2.0 had. The derived training sets (retrieval-pairs, retrieval-triples, qrels) re-sample negatives over the larger pool, so their rows differ; and the store-wide quality passes run for v2.4 retired ~3,000 senses of the v2.0 entries (phantom part-of-speech blocks and near-duplicate senses), so those senses are now tombstoned rather than live. Treat v2.4 as a new release, not a delta.

Scope: fewer headwords, far more per headword

v2.4 is not a superset of v1.3. It covers 160,724 of v1.3's 205,988 lexemes — every frequency-ranked single word, plus the compounds and names at Wikipedia frequency ≥ 10 — and spends the difference on depth. If you need breadth of vocabulary, use v1.3; if you need graded renditions, resolved relations, spans, or retrieval supervision, use v2.4.

v1.3 v2.4
Lexemes 205,988 160,724
Senses 565,604 300,787
Definition renditions per sense 1 canonical 1 canonical + up to 8 graded
Relation targets bare strings resolved to sense ids
Retrieval training data companion sets queries, QA, triples, qrels
Per-field provenance no model, tokens and cost per call

Key statistics

Lexemes 160,724
Retired lexemes (every sense tombstoned; not counted above) 4,567
Live senses 300,787
Rows in this dataset 4,209,494
Renditions per sense (mean) 14.0
Distinct reading levels 5
Distinct registers 5

By tier

  • core — top 10K by composite frequency
  • tier2 — ranks to ~42K
  • tier3 — the rest of the frequency-ranked single words
  • tier4 — stopwords, plus compounds and names at Wikipedia frequency ≥ 10
  • tier5 — the WordNet 3.0 lemmas the earlier tiers lacked: common compounds and technical nouns, adjectives, adverbs and verbs (instances, taxa and organisms excluded); 5,126 from v1.3 files, the rest imported from WordNet
  • tier6 — named entities — people, places, organizations, works and events ranked by Wikipedia vital-article level, Wikidata sitelinks, WordNet instance membership and US salience, which no frequency list ranks
Tier Lexemes Live senses
core 9,427 32,193
tier2 30,346 71,957
tier3 11,452 23,511
tier4 53,841 113,873
tier5 43,227 46,755
tier6 12,078 12,145
unknown 353 353

Coverage by tier

The release was built in 6 frequency-ranked passes (core, tier2, tier3, tier4, tier5 and tier6) and they did not all receive the same stages. This table is per-field and per-tier so the gaps are visible rather than averaged away.

Field Of core tier2 tier3 tier4 tier5 tier6 unknown
Canonical gloss sense 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Controlled domain tag sense 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Gloss at 4 reading levels sense 100.0% 99.9% 99.9% 100.0% 99.9% 100.0% 0.0%
Gloss in 4 registers sense 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
At least one example sense 100.0% 99.9% 100.0% 99.6% 100.0% 100.0% 100.0%
Examples at 4 reading levels sense 99.6% 99.6% 99.9% 98.4% 99.9% 100.0% 60.6%
At least one relation sense 99.4% 99.4% 99.4% 99.5% 99.3% 99.9% 100.0%
Synthetic retrieval queries sense 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Grounded QA pairs sense 99.9% 99.7% 99.3% 99.6% 99.9% 100.0% 100.0%
Etymology lexeme 100.0% 100.0% 99.8% 100.0% 100.0% 100.0% 100.0%
Lexical explanation lexeme 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Encyclopedia (neutral) lexeme 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Encyclopedia at grade 5 + college (core entries also carry grade 1 and grade 10) lexeme 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 0.0%
Contrast paragraphs lexeme 85.2% 68.7% 58.1% 61.9% 38.8% 7.4% 9.6%

Reading levels

Level Rows
neutral 1,503,935
college 1,202,759
grade_5 902,008
grade_1 300,434
grade_10 300,358

Registers

Register Rows
plain 1,502,411
formal 902,361
informal 902,361
technical 601,574
marketing 300,787

Files

Files Config Rows Shards Size
data/train-*.parquet default 4,209,494 9 158.5 MB

Fields

4,209,494 rows, one row per gloss rendition.

Field Type Description
sense_id string Sense id: {lexeme_id}:{pos}:{index}. Join key.
lexeme_id string Owning entry id: slugify(headword). Join key.
headword string The owning entry's surface headword.
pos string Part of speech of the owning POS entry (noun, verb, …).
sense_index int32 Zero-based position of the sense within its POS entry.
domain string Controlled domain leaf, root.leaf (nullable).
tier string core (top 10K by composite frequency), tier2 (ranks to ~42K), tier3 (the rest of the frequency-ranked single words), tier4 (stopwords, plus compounds and names at Wikipedia frequency ≥ 10), tier5 (the WordNet 3.0 gap the earlier tiers lacked), tier6 (named entities — people, places, organizations, works and events, ranked by importance rather than by frequency) or unknown (on none of the rank lists); an export may contain only some of these — see the coverage table.
reading_level string neutral, grade_1, grade_5, grade_10 or college.
register string plain, informal, formal, technical or marketing.
text string The definition at this (reading level, register).
readability_grade double Measured Flesch-Kincaid grade of text, when the pipeline recorded one.
is_canonical bool True for the one (neutral, plain) rendition, which is the sense's canonical gloss.
qa_flags list<string> MQM-grounded quality flags recorded on this rendition, if any.

One real row:

{
  "sense_id": "0:noun:0",
  "lexeme_id": "0",
  "headword": "0",
  "pos": "noun",
  "sense_index": 0,
  "domain": "everyday_life.quantity_time",
  "tier": "tier5",
  "reading_level": "neutral",
  "register": "plain",
  "text": "a mathematical element that when added to another number yields the same number",
  "readability_grade": null,
  "is_canonical": true,
  "qa_flags": []
}

Loading it

from datasets import load_dataset

ds = load_dataset("mjbommar/opengloss-v2.4-definitions", split="train")
print(ds)
print(ds[0])

The shards are plain parquet, so nothing forces you through datasets — read them straight, locally or over hf://:

import polars as pl

df = pl.read_parquet("hf://datasets/mjbommar/opengloss-v2.4-definitions/data/train-*.parquet")
print(df.head())
import duckdb

duckdb.sql("SELECT count(*) FROM 'hf://datasets/mjbommar/opengloss-v2.4-definitions/data/train-*.parquet'").show()

A parallel corpus of one definition at four reading levels

import duckdb

rows = duckdb.sql('''
    SELECT sense_id, reading_level, text
    FROM 'data/train-*.parquet'
    WHERE register = 'plain'
    ORDER BY sense_id, reading_level
''').df()
print(rows.head(10))

Identifiers, and how they compose

Every id is derived from structure, never randomly minted, so a consumer can recompute one from a row and join across the whole family without a lookup table. Sense positions are stable across regenerations: a retired sense is tombstoned, not removed, so the indices after it never shift.

Id Shape Example
Lexeme slugify(headword) abseil
Sense {lexeme_id}:{pos}:{index} (zero-based) abseil:verb:0
Rendition {owner_id}#{reading_level}/{register} abseil:verb:0#grade_5/plain
Entry-level owner {lexeme_id}:encyclopedia / :explanation abseil:encyclopedia
Edge {source_sense_id}-{type}->{target_lexeme_id} abseil:verb:0-synonym->rappel
Query {sense_id}#q{n} (zero-based) abseil:verb:0#q3
QA pair {sense_id}#qa{n} (zero-based) abseil:verb:0#qa3
Provenance record p{n} within its entry (one-based) p12

An edge id keys on the target's slug, not on the target's sense, so resolving a target never changes the id of the edge that found it.

Reading levels and registers

A rendition is keyed on a (reading_level, register) pair. The canonical rendition of every field is (neutral, plain); everything else is a rewrite of it.

reading_level Who it is written for Rough CCSS band
neutral The canonical text: an adult general reader, no level targeted —
grade_1 Beginning readers; short sentences, common words K–1
grade_5 Upper elementary 4–5
grade_10 Secondary 9–10
college Undergraduate and above; technical vocabulary allowed 11–CCR
register What changes Reading it
plain Nothing — the neutral register The default
informal Conversational, contractions, everyday words How you'd say it to a friend
formal Full forms, precise hedging, no contractions How you'd write it in a report
technical Domain vocabulary, exact conditions How a specialist would state it
marketing Benefit-first, persuasive framing A genre, not a formality level

marketing sits on the register axis for convenience but is a genre value rather than a point on the formality scale — worth remembering if you train a formality classifier on this column.

Related datasets

Everything below is built from the same store and joins on lexeme_id / sense_id.

Dataset Grain What it holds
opengloss-v2.4-lexicon one row per lexeme One row per lexeme: kind, morphology, etymology, encyclopedia, contrasts, sense ids, provenance summary.
opengloss-v2.4-senses one row per live sense One row per live sense: canonical gloss, 8 gloss renditions, examples, resolved relations, synthetic queries, grounded QA pairs.
opengloss-v2.4-definitions (this one) one row per gloss rendition One row per gloss rendition (canonical included): reading level, register, text, readability grade.
opengloss-v2.4-examples one row per example rendition One row per example sentence with the headword's character span, its reading level and register.
opengloss-v2.4-encyclopedia one row per encyclopedia rendition · one row per lexical-explanation rendition One row per encyclopedia article rendition, plus an explanation config for the "why this word" prose.
opengloss-v2.4-etymology one row per entry with an etymology One row per entry with an etymology: prose summary, ordered language trail, cognates, references.
opengloss-v2.4-inflections one row per inflected, derived or lemma form One row per inflected or derived form, plus the lemma itself: a flat form→lemma lookup.
opengloss-v2.4-relations one row per live relation edge · one row per removed relation edge One row per semantic edge, resolved to target sense ids; a tombstoned config recovers the edges the reconcile pass removed.
opengloss-v2.4-queries one row per synthetic query One row per synthetic retrieval query, across eight query styles, tagged to the sense it should retrieve.
opengloss-v2.4-qa-pairs one row per question/answer pair One row per grounded question/answer pair, with the rendition ids the answer cites.
opengloss-v2.4-contrasts one row per contrast paragraph One row per "X vs Y" paragraph on a synonym/antonym/confusable edge, with a verdict on the edge.
opengloss-v2.4-provenance one row per provenance record One row per recorded generation call: stage, model, tokens, cost, run id — the audit trail.
opengloss-v2.4-retrieval-pairs one row per mined pair Word-in-context and doc2query-shaped (text_a, text_b, label) pairs mined from the store for free.
opengloss-v2.4-retrieval-triples one row per (query, positive, negative) triple MS MARCO-style (query, positive, negative) triples whose hard negatives come from the graph.
opengloss-v2.4-qrels one row per query, with its whole graded candidate list · one row per document in the retrieval corpus Graded TREC relevance judgements (0–3) plus the document corpus and listwise candidate lists.
opengloss-v2.4-pretrain one row per rendered document Entries serialised into plain-prose dictionary, thesaurus, encyclopedia and usage-note documents.

Known limitations

  • It is synthetic. Every string here was written by a language model against a schema, not transcribed from a corpus or checked by a lexicographer. It is well-formed and internally consistent; it is not attested usage, and it will contain confident errors. Do not use it as ground truth about what a word means.
  • Judge scores 70.2/100 (core + tier 2) and 66.7/100 (tier 3). A different model family (Claude Opus) scored fixed 40-entry stratified samples at the close of each build. Sample statistics, not per-entry guarantees, and the judge is itself a model.
  • Relation precision is the weakest axis. Relations were judged for validity and the ones that failed were demoted rather than asserted; symmetric reciprocity finished at 94.2% for synonyms and 94.3% for antonyms, and 4,722 senses were left with no relation at all. Treat a single edge as a hypothesis, not a fact; treat the aggregate graph as usable.
  • core, tier2, tier3, tier4, tier5 and tier6 are deliberately partial. 160,371 lexemes across core, tier2, tier3, tier4, tier5 and tier6 received the text stages (glosses, examples, encyclopedia) but not the queries, QA pairs, contrasts or register renditions. The coverage table above gives the exact per-field share; nothing is hidden behind an average.
  • The encyclopedia is entry-level. One article per headword, about the headword as a whole. On a polysemous entry it is not a description of any one sense, and it is never used as a positive for one (D-71). It is entry-level reference prose, not a specialist article.

Sources and licences

This release is Creative Commons Attribution 4.0 International (CC-BY 4.0). Of 160,724 lexemes in this release, 40,643 (the tier-5 entries whose source column reads wordnet-3.0) are derived from Princeton WordNet 3.0: their glosses, examples, relations and derivationally related forms, plus WordNet's own capitalisation of the headword (D-78).

The WordNet License permits use, copying, modification and distribution without fee, provided its notice is preserved:

The WordNet License notice is quoted in full on the opengloss-v2.4-lexicon and opengloss-v2.4-senses cards; this repo's WordNet-derived rows are governed by the same terms.

Citation

@misc{bommarito2025opengloss,
  title  = {OpenGloss: A Synthetic Encyclopedic Dictionary and Semantic Knowledge Graph},
  author = {Bommarito, Michael J., II},
  year   = {2025},
  eprint = {2511.18622},
  archivePrefix = {arXiv},
  url    = {https://arxiv.org/abs/2511.18622}
}

Tier-5 entries additionally derive from Princeton WordNet 3.0 (D-78):

@article{miller1995wordnet,
  title   = {WordNet: A Lexical Database for English},
  author  = {Miller, George A.},
  journal = {Communications of the ACM},
  volume  = {38},
  number  = {11},
  pages   = {39--41},
  year    = {1995}
}

@book{fellbaum1998wordnet,
  title     = {WordNet: An Electronic Lexical Database},
  editor    = {Fellbaum, Christiane},
  publisher = {MIT Press},
  year      = {1998}
}

License

Released under Creative Commons Attribution 4.0 International (CC-BY 4.0). Attribution to the OpenGloss project is required; commercial use is permitted. See Sources and licences above for the Princeton WordNet License that additionally covers this release's tier-5 entries.

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