addition

[ uh-dish-uhn ]
/ əˈdɪʃ ən /

noun

the act or process of adding or uniting.
the process of uniting two or more numbers into one sum, represented by the symbol +.
the result of adding.
something added.
a wing, room, etc., added to a building, or abutting land added to real estate already owned.
Chemistry. a reaction in which two or more substances combine to form another compound.

Idioms for addition

    in addition to, as well as; besides: In addition to directing the play, she designed most of the scenery.

Origin of addition

1350–1400; Middle English addicio(u)n < Latin additiōn- (stem of additiō), equivalent to addit(us), past participle of addere to add ( ad- ad- + di- put + -tus past participle suffix) + -iōn- -ion

synonym study for addition

4. Addition, accessory, adjunct, attachment mean something joined onto or used with something else. Addition is the general word, carrying no implication of size, importance, or kind, but merely that of being joined to something previously existing: an addition to an income, to a building, to one's cares. An accessory is a subordinate addition to a more important thing, for the purpose of aiding, completing, ornamenting, etc.: accessories to a costume. An adjunct is a subordinate addition that aids or assists a main thing or person but is often separate: a second machine as an adjunct to the first. An attachment is an accessory part that may be easily connected and removed: a sewing machine attachment for pleating.

OTHER WORDS FROM addition

pre·ad·di·tion, noun re·ad·di·tion, noun

WORDS THAT MAY BE CONFUSED WITH addition

addition edition

Example sentences from the Web for addition

British Dictionary definitions for addition

addition
/ (əˈdɪʃən) /

noun

Word Origin for addition

C15: from Latin additiōn-, from addere to add

Scientific definitions for addition

addition
[ ə-dĭshən ]

The act, process, or operation of adding two or more numbers to compute their sum.

Idioms and Phrases with addition

addition

see in addition.