addition

noun

(uncountable, arithmetic) The arithmetic operation of adding.

(uncountable) The act of adding anything.

Anything that is added.

(music) A dot at the right side of a note as an indication that its sound is to be lengthened one half.

(heraldry) Something added to a coat of arms, as a mark of honour.

(chiefly law) A title annexed to a person's name to identify him or her more precisely.

(organic chemistry) an organic reaction where two or more molecules combine to form a larger one (the adduct).

Roots

addoadd- · Latin · add, give to

Synonyms for addition

additamentn summationn addingv increasen additionallyadv complementn accessionn supplementn addendumn furthermoreadv additiven besidesadv inclusionn addenda

Synonyms & related words for addition

Find synonyms, related words, and the definition of addition — including additament, summation, adding, increase, additionally, complement. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to addition

Explore words related to addition — words associated with it, words that go with it, and its nearest matches in meaning. Related words include plus, superadd, totting, added, additional, adds, addend, accessional. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for addition

Common synonyms for addition include additament, summation, adding, increase, additionally, complement, accession, supplement — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does addition come from?

The word addition breaks down into one root of Latin origin: the root add-, from Latin addo (“add, give to”). Explore each root to see other English words built from the same source.