# index
## English
### Etymology

From Latin index (“a discoverer, informer, spy; of things, an indicator, the forefinger, a title, superscription”), from indicō (“point out, show”); see indicate.

### Pronunciation

* IPA: /ˈɪndɛks/
* Audio (US):(file)

### Noun

index (plural indexes or indices or (obsolete, in use in the 17th century) index's)
* An alphabetical listing of items and their location.
    The index of a book lists words or expressions and the pages of the book upon which they are to be found.
* The index finger; the forefinger.
    Synonyms: see Thesaurus:index finger
* A movable finger on a gauge, scale, etc.
* (typography) A symbol resembling a pointing hand, used to direct particular attention to a note or paragraph.
    Synonym: manicule
* That which points out; that which shows, indicates, manifests, or discloses.
** 1731, John Arbuthnot, An Essay Concerning the Nature of Aliments, and the Choice of Them, According to the Different Constitutions of Human Bodies. […], London: […] J[acob] Tonson […], →OCLC:Tastes are the Indexes of the different Qualities of Plants.
* A sign; an indication; a token.
** 1887, Robert Louis Stevenson, The Misadventures of John Nicholson:His son's empty guffaws […] struck him with pain as the indices of a weak mind.
** 1984 December 22, Gayle Rubin, “Censored: Anti-Porn Laws And Women's Liberation”, in Gay Community News, volume 12, number 23, page 8:Their use of these words as epithets is an index of an appallingly low level of feminist awareness.
* (linguistics) A type of noun where the meaning of the form changes with respect to the context; e.g., 'Today's newspaper' is an indexical form since its referent will differ depending on the context. See also icon and symbol.
* (economics) A single number calculated from an array of prices or of quantities.
* (sciences) A number representing a property or ratio; a coefficient.
** 1963, Richard Feynman, “Chapter 26, Optics: The Principle of Least Time”, in The Feynman Lectures on Physics, volume I:In other words, we predict that the index for a new pair of materials can be obtained from the indexes of the individual materials, both against air or against vacuum.
* (mathematics) A raised suffix indicating a power.
* (computing, especially programming and databases) An integer or other key indicating the location of data, e.g. within an array, vector, database table, associative array, or hash table.
* (computing, databases) A data structure that improves the performance of operations on a table.
* (algebra, index of a subgroup) The number of cosets that exist.
    The index of 2ℤ in ℤ is 2.
* (obsolete) A prologue indicating what follows.
** c. 1599–1602 (date written), William Shakespeare, “The Tragedie of Hamlet, Prince of Denmarke”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act III, scene iv]:Ay me, what act, that roars so loud and thunders in the index?

#### Derived terms

* Aarne-Thompson-Uther index
* abundancy index
* anti-index
* anti-knock index
* Atiyah-Singer index theorem
* Balassa index
* Banzhaf power index
* body mass index
* burning index
* business index
* card-index
* card index
* Carrico index
* closet index
* clustered index
* consumer price index
* corpulence index
* cranial index
* cross-index
* de Bruijn index
* disposition index
* ease of doing business index
* edge index
* Gini index
* Gittins index
* glycaemic index
* glycemic index
* gnathic index
* Gunning fog index
* Hawking Index
* heat index
* Herfindahl index
* h-index
* Hoover index
* Horowitz index
* index card
* index case
* index digit
* index fossil
* index fund
* indexic
* indexical
* indexless
* index-linked
* index locorum
* index nominum
* index of suspicion
* index patient
* index register
* index rerum
* index term
* index verborum
* inverted index
* Jaccard index
* linguistic diversity index
* misery index
* Nikkei index
* nonclustered index
* open index
* orbital index
* ponderal index
* price index
* process window index
* producer price index
* Quetelet index
* Quetelet's index
* ramp travel index
* refractive index
* Robin Hood index
* Rohrer's index
* Schutz index
* stock market index
* tab index
* temperature-humidity index
* therapeutic index
* thumb index
* Törnqvist index
* Townsend deprivation index
* vulnerability index
* z-index

#### Related terms

* indicate
* indication
* indicator
* indicia

#### Descendants

* ⇒ Chinese: 引得 (yǐndé)
* → Japanese: インデックス (indekkusu)

#### See also

* (alphabetical listing): table of contents

#### References

* John A. Simpson and Edmund S. C. Weiner, editors (1989), “index”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, →ISBN.

### Verb

index (third-person singular simple present indexes, present participle indexing, simple past and past participle indexed)
* (transitive) To arrange an index for something, especially a long text.
    MySQL does not index short words and common words.
* To inventory; to take stock.
* (chiefly economics) To normalise in order to account for inflation; to correct for inflation by linking to a price index in order to maintain real levels.
* To measure by an associated value.
** 2019 November 21, Samanth Subramanian, “How our home delivery habit reshaped the world”, in The Guardian‎:For thousands of years, human progress was indexed to the ease and speed of our mobility: our capacity to walk on two legs, and then to ride on animals, sail on boats, chug across the land and fly through the air, all to procure for ourselves the food and materials we wanted.
* (linguistics, transitive) To be indexical for (some situation or state of affairs); to indicate.
** 2008, Haruko Minegishi Cook, Socializing Identities Through Speech Style, page 22:For example, the feature I indexes the current speaker in the speech event and you, the current addressee.
* (computing) To access a value in a data container by an index.

#### Derived terms

* indexer

#### Translations
### Further reading

* “index”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
* William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “index”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC.

### Anagrams

* nixed, xenid

## Czech
### Pronunciation

* IPA: [ˈɪndɛks]
* Audio:(file)

### Noun

index m inan
* index (alphabetical listing of items and their location)
    Synonym: rejstřík
* (economics) index
    index spotřebitelských cen ― consumer price index
* (computing, databases) index (a data structure that improves the performance of operations on a table)

#### Related terms

* See dikce
* indexace
* indexovat
* indexování
* indexový
* indicie
* indikace
* indikátor
* indikovat

### Further reading

* “index”, in Příruční slovník jazyka českého (in Czech), 1935–1957
* “index”, in Slovník spisovného jazyka českého (in Czech), 1960–1971, 1989

## Dutch
### Etymology

From Middle Dutch index, from Latin index.

### Pronunciation

* IPA: /ˈɪn.dɛks/
* Audio:(file)
* Hyphenation: in‧dex

### Noun

index m (plural indexen or indices, diminutive indexje n)
* index (list)
* index (number or coefficient representing various relations)
* (medicine, anatomy) index finger
    Synonym: wijsvinger

#### Derived terms

* brekingsindex
* prijsindex

#### Related terms

* indexatie
* indexeren
* indicator
* indiceren

#### Descendants

* → Indonesian: indèks

## French
### Etymology

From Latin index (“pointer, indicator”), from indicō (“point out, show”).

### Pronunciation

* IPA: /ɛ̃.dɛks/
* Audio:(file)

### Noun

index m (plural index)
* index
* forefinger
* the welcome page of a web site, typically index.html, index.htm or index.php

#### Derived terms

* mettre à l’index

#### Descendants

* → Persian: اندکس (andeks)
* → Turkish: endeks, indeks

### Further reading

* “index”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

## Hungarian
### Etymology

Borrowed from Latin index.

### Pronunciation

* IPA: [ˈindɛks]
* Hyphenation: in‧dex
* Rhymes: -ɛks

### Noun

index (plural indexek)
* (automotive) turn signal (US), indicator (UK) (each of the flashing lights on each side of a vehicle which indicate a turn is being made to left or right, or a lane change)
    Synonym: irányjelző
* pointer, hand, indicator (a needle or dial on a device)
    Synonyms: mutató, kar
* (higher education) transcript, report card, course report (in higher education)
    Synonym: leckekönyv
    Coordinate term: (in lower education) ellenőrző
* index (an alphabetical listing of items and their location, usually at the end of publications)
    Synonyms: névmutató, tárgymutató, szómutató
* ban, blacklist (a list of books that was banned)

#### Derived terms

* indexel
* indexes
* árindex
* indexkép
* indexszám
* testtömegindex
* alsó index
* felső index

### References

* ↑ Tótfalusi, István. Idegenszó-tár: Idegen szavak értelmező és etimológiai szótára (’A Storehouse of Foreign Words: an explanatory and etymological dictionary of foreign words’). Budapest: Tinta Könyvkiadó, 2005. →ISBN

### Further reading

* index in Bárczi, Géza and László Országh. A magyar nyelv értelmező szótára (“The Explanatory Dictionary of the Hungarian Language”, abbr.: ÉrtSz.). Budapest: Akadémiai Kiadó, 1959–1962. Fifth ed., 1992: →ISBN

## Latin
### Etymology

From in + the root of dīcere (“to indicate”) +‎ -s. Compare iūdex.

### Pronunciation

* (Classical Latin) IPA: /ˈin.deks/, [ˈɪn̪d̪ɛks̠]
* (modern Italianate Ecclesiastical) IPA: /ˈin.deks/, [ˈin̪d̪eks]

### Noun

index m or f (genitive indicis); third declension
* A pointer, indicator.
* The index finger, forefinger.
    Synonym: digitus salūtāris
* (of books) An index, list, catalogue, table, summary, digest.
* (of books) A title, superscription.
* A sign, indication, proof, mark, token, index.
    Synonyms: signum, indicium
* An informer, discoverer, director, talebearer, guide, witness, betrayer, spy.
    Synonym: trāditor
* (of paintings or statues) An inscription.

#### Declension

Third-declension noun.

#### Derived terms

* indicīna
* indicium
* indiculum

#### Related terms

* indicābilis
* indicātiō
* indicātīvus
* indicātor
* indicātūra
* indicō

#### Descendants

* Catalan: enze
* → Catalan: índex
* → Czech: index
* → Danish: indeks
* → English: index
** ⇒ Chinese: 引得 (yǐndé)
** → Japanese: インデックス (indekkusu)
* → Esperanto: indekso
* → French: index
** → Persian: اندکس (andeks)
** → Turkish: endeks, indeks
* Galician: éndez, endego
* → Galician: índice
* → German: Index
* → Hungarian: index
* Italian: endice
* → Italian: indice
* → Ladin: indesc
* → Macedonian: индекс (indeks)
* → Middle Dutch: index
** Dutch: index
*** → Indonesian: indèks
* → Norwegian Bokmål: indeks
* → Norwegian Nynorsk: indeks
* → Polish: indeks
* → Portuguese: índex, índice
* → Romanian: index, indice
* → Russian: и́ндекс (índeks)
** → Kazakh: индекс (indeks)
* → Serbo-Croatian: ѝндекс, ìndeks
* Sicilian: ìnnici
* → Spanish: índex, índice
* → Swahili: index
* → Ukrainian: і́ндекс (índeks)

### References

* “index”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
* “index”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
* "index", in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
* index in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
* Carl Meißner, Henry William Auden (1894) Latin Phrase-Book‎, London: Macmillan and Co. the title of a book: index, inscriptio libri
* “index”, in Harry Thurston Peck, editor (1898), Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
* “index”, in William Smith, editor (1848), A Dictionary of Greek and Roman Biography and Mythology, London: John Murray
* “index”, in William Smith et al., editor (1890), A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin

## Romanian
### Etymology

Borrowed from Latin index. Doublet of indice and indiciu.

### Noun

index n (plural indexuri)
* index

#### Declension
## Swedish
### Etymology

Borrowed from Latin index.

### Noun

index n
* index

#### Derived terms

* aktieindex
* brytningsindex
* börsindex
* indexera
* konsumentprisindex
* prisindex