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addition definition

ad·di·tion (ə dis̸hən)

noun

  1. an adding of two or more numbers to get a number called the sum
  2. a joining of a thing to another thing
  3. a thing or part added; increase; specif., a room or rooms added to a building
  4. Law an identifying title or mark of status after a person's name (Ex.: John Smith, Esq.)

Etymology: ME addicion < OFr addition < L additio < addere: see add

addition Idioms

in addition (to)

besides; as well (as)

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Alternate definitions:
addition Synonyms

addition

n.

  1. The process of adding

    reckoning, computing, totaling, summing up, summation, enlarging, accruing, increasing, expanding, tabulating, counting, accretion, joining, uniting, appending, annexing.

    Antonyms subtraction, reduction*, lessening. *

  2. That which has been added

    interest, raise, additive, adjunct, augmentation, addendum, profit, profits, dividend, dividends, bonus, commission, increment, supplement, gain, insert, accretion, accession, accrual, subordinate part, enhancement, aggrandizement, reinforcement, appendage, appendix, accessory, appurtenance, attachment, extension, increase, annex, affix, appreciation.

    Antonyms loss*, reduction*, shrinkage. *

  3. An architectural extension

    wing, ell, annex, spare room, extension; see also room 2.


Webster's New World Roget's A-Z Thesaurus Copyright © 1999 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

addition Usage Examples

Converse of object

  • announce: This circular announces the addition of the DAWN telephone to the Special Range and describes the telephone and additional procedures associated with it.

Converse of subject

  • enhance: Experiments in the Southern Ocean show that productivity, and subsequent CO 2 drawdown, are enhanced by iron additions.

Adjective modifier

  • late: The hall to the rear is a later addition.

Modifies a noun

  • sobredo: Kem Plastic Playing Cards, Inc. In addition sobredo sits next to.

Noun used with modifier

  • page: Yahoo has indexed 95 pages and is about four days behind the page additions.

Preposition: of

  • rockin': Girls will also delight in the addition of a rockin' drum set and an awesome revamp of the Sassy Sleepover bag.
addition usage examples (more)

The word usage examples above have been gathered from various sources to reflect current and historical usage. They do not represent the opinions of YourDictionary.com.

addition quotes

And if there be any addition to knowledge, it is rather a new knowledge than a greater knowledge; rather a singularity in a desire of proposing something that was not knownat all beforethananimproving, anadvancing, a multiplying of former inceptions; and by that means, no knowledge comes to be perfect.

-Donne,John

addition quotes (more)

Webster's New World Dictionary of Quotations Copyright © 2005 by Chambers Harrap Publishers Ltd. All rights reserved. Published by Wiley, Hoboken, NJ. Used by arrangement with John Wiley & Sons, Inc.

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MLA Style

"addition." Webster's New World College Dictionary. 2009

  • Your Dictionary. 4 July 2009
  • <www.yourdictionary.com/addition>

APA Style

addition. (2009). In Webster's New World College Dictionary

  • Retrieved July 4th, 2009, from www.yourdictionary.com/addition

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