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anti-

 - 4 dictionary results

anti-

 
Use anti- in a Sentence
a prefix meaning “against,” “opposite of,” “antiparticle of,” used in the formation of compound words (anticline); used freely in combination with elements of any origin (antibody; antifreeze; antiknock; antilepton).
Also, before a vowel, ant-.

Origin:
ME < L < Gk, prefixal use of antí; akin to Skt ánti opposite, L ante, MD ende (> D en and), E an- in answer. Cf. ante-, and
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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anti- or ant-  
pref.  

    1. Opposite: antimere.

    2. Opposing; against: antiapartheid.

    3. Counteracting; neutralizing: antacid.

    4. Destroying: antiaircraft.

    5. Inverse: antilogarithm.

    6. Displaying opposite characteristics: antihero.

    1. Inverse: antilogarithm.

    2. Displaying opposite characteristics: antihero.


[Greek, from anti, opposite; see ant- in Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

anti- 
L. anti- from Gk. anti "against, opposite, instead of," from PIE *anti (see ante). Antisocial is from 1797. Anti-aircraft (adj.) first attested 1914; first record of anti-freeze is 1913 (adj.), 1935 as a noun; anti-matter first attested 1953. Antihistamine first attested 1933. Anti-American first recorded 1793, in ref. to parliamentary policies.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

anti- or ant-
pref.

  1. Opposite: antimere.

  2. Opposing; against: antisocial.

  3. Counteracting; neutralizing: antibody.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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