addition

[ uh-dish-uhn ]

noun

1. the act or process of adding or uniting.
2. the process of uniting two or more numbers into one sum, represented by the symbol +.
3. the result of adding.

   Synonyms: accession, increment, enlargement, increase

4. something added.

   Synonyms: appendix, supplement, accession, increment, enlargement, increase

5. a wing, room, etc., added to a building, or abutting land added to real estate already owned.
6. Chemistry. a reaction in which two or more substances combine to form another compound.

addition

/ əˈdɪʃən /

noun

1. the act, process, or result of adding
2. a person or thing that is added or acquired
3. a mathematical operation in which the sum of two numbers or quantities is calculated. Usually indicated by the symbol +
4. a part added to a building or piece of land; annexe
5. obsolete.
   a title following a person's name
6. in addition
   in addition adverb also; as well; besides
7. in addition to
   in addition to preposition besides; as well as

addition

/ ə-dĭsh′ən /

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

Other Words From

• pread·dition noun
• read·dition noun

Word History and Origins

Origin of addition¹

First recorded in 1350–1400; Middle English addicio(u)n, from Latin additiōn-, stem of additiō, from addit(us) “added” (past participle of addere “to add”; add ) + -iō -ion

Word History and Origins

Origin of addition¹

C15: from Latin additiōn-, from addere to add

Idioms and Phrases

Idioms

1. in addition to, as well as; besides:

   In addition to directing the play, she designed most of the scenery.

More idioms and phrases containing addition

see in addition .

Synonym Study

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.

Example Sentences

In addition, foreign films were limited by a system of licensure to a third of the number of domestic films.

From The Daily Beast

In addition to visiting the tomb of John Paul, who died of natural causes in 2005, Agca asked to see his successor, Pope Francis.

From The Daily Beast

In addition to the negative on-field attention, off-the-field problems were just as bad this year.

From The Daily Beast

In addition, he had made prudent investments and, except for his wine cellar, did not live lavishly.

From The Daily Beast

In addition, because House Democrats were cut out of the negotiations over the bill, they don't feel any incentive to play ball.

From The Daily Beast

With each division, in addition to the divisional staff, there were officers detached from the headquarters staff.

From Project Gutenberg

Now in addition to that I had something else in my own college course—something of the same sort of thing but better.

From Project Gutenberg

The “Compañia General de Tabacos” lost about ₱30,000 in cash in addition to the damage done to their offices and property.

From Project Gutenberg

In future years the poor-rate (so-called) will include, in addition to these, all other rates levyable by the Corporation.

From Project Gutenberg

During the last century these were recast, and addition made to the peal, which now consists of twelve.

From Project Gutenberg

Related Words

• bonus
• boost
• enhancement
• expansion
• extension
• supplement