# addition
## English
### Etymology

Sense of “what is added” dates from 14th century, from Middle English addicioun, addition, from Old French adition, from Latin additiōnem, accusative singular of additiō, from addō (“add, put”).

### Pronunciation

* IPA: /əˈdɪʃ.ən/, [əˈdɪʃ.n̩]
* Audio (US):(file)
* Homophone: edition (weak vowel merger)
* Rhymes: -ɪʃən

### Noun

addition (countable and uncountable, plural additions)
* (uncountable) The act of adding anything.
    The addition of five more items to the agenda will make the meeting unbearably long.
* Anything that is added.
* (uncountable, arithmetic) The arithmetic operation of adding.
* (music) A dot at the right side of a note as an indication that its sound is to be lengthened one half.
* (chiefly law) A title annexed to a person's name to identify him or her more precisely.
** c. 1599–1602 (date written), William Shakespeare, The Tragicall Historie of Hamlet, Prince of Denmarke: […] (Second Quarto), London: […] I[ames] R[oberts] for N[icholas] L[ing] […], published 1604, →OCLC,:[…] They clip vs drunkards, and with Swiniſh phraſe / Soyle our addition, and indeede it takes / From our atchieuements, though perform’d at height / The pith and marrow of our attribute […]
* (heraldry) Something added to a coat of arms, as a mark of honour.
    Antonym: abatement
* (organic chemistry) an organic reaction where two or more molecules combine to form a larger one (the adduct).

#### Synonyms

* (act of adding): adding, annexation, inclusion
* (thing added): extra, supplement; See also Thesaurus:adjunct

#### Antonyms

* (antonym(s) of “act of adding”): exclusion, reduction
* (antonym(s) of “thing added”): deduction, reduction; See also Thesaurus:decrement
* (antonym(s) of “arithmetic operation”): subtraction

#### Coordinate terms

* succession
* multiplication
* exponentiation
* tetration
* pentation
* hexation

#### Derived terms

* additional
* additionary
* additionist
* addition polymerisation
* addition polymerization
* addition reaction
* addition sign
* coaddition
* cycloaddition
* digitaddition
* gyroaddition
* heteroaddition
* in addition
* in addition to
* isoaddition
* Michael addition
* misaddition
* nonaddition
* photoaddition
* polyaddition
* readdition
* retroaddition
* spike addition
* superaddition

#### Related terms

* add
* adder
* additive

#### Translations
### See also

* plus sign (+)
* addition, summation: (augend) + (addend strict sense) = (addend broad sense) + (addend broad sense) = (summand) + (summand) = (sum, total)
* subtraction: (minuend) − (subtrahend) = (difference, remainder)
* multiplication: (multiplier, multiplicator) × (multiplicand) = (factor) × (factor) = (product)
* division: (dividend) ÷ (divisor) = (quotient), remainder left over if divisor does not divide dividend

### References

* Douglas Harper (2001–2025) “addition”, in Online Etymology Dictionary.

## Danish
### Noun

addition c (singular definite additionen, plural indefinite additioner)
* (arithmetic) addition, act of adding

#### Declension
## French
### Etymology

Learned borrowing from Latin additiōnem.

### Pronunciation

* IPA: /a.di.sjɔ̃/
* Audio:(file)
* Homophone: additions
* Rhymes: -ɔ̃

### Noun

addition f (plural additions)
* (arithmetic) addition (operation of adding a number to another)
    Coordinate terms: soustraction, multiplication, division
* bill, check (written note of goods sold, services rendered, or work done, with the price or charge, in a bar or a restaurant)

#### Derived terms

* additionner

#### Descendants

* → Turkish: adisyon

### Further reading

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

### Anagrams

* dodinait

## Swedish
### Etymology

Latin additiōnem, accusative singular of additio.

### Noun

addition c
* (mathematics) an addition