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suppressant

[suh-pres-uh nt]
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noun
  1. a substance that suppresses an undesirable action or condition: an appetite suppressant.
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Origin of suppressant

1940–45; supress + -ant
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for suppressant

suppressant

adjective
  1. tending to suppress or restrain an action or condition
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noun
  1. a suppressant drug or agenta cough suppressant
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for suppressant

n.

1958, from suppress + -ant.

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Online Etymology Dictionary, © 2010 Douglas Harper