• synonyms


[an-ti-his-tuh-meen, -min]
noun Physiology, Pharmacology.
  1. any of certain compounds or medicines that neutralize or inhibit the effect of histamine in the body, used chiefly in the treatment of allergic disorders and colds.
Show More

Origin of antihistamine

First recorded in 1930–35; anti- + histamine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for antihistamine

Contemporary Examples

British Dictionary definitions for antihistamine


  1. any drug that neutralizes the effects of histamine, used esp in the treatment of allergies
Show More
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 antihistamine


1933, from anti- + histamine.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

antihistamine in Medicine


(ăn′tē-hĭstə-mēn′, -mĭn)
  1. Any of several drugs used to counteract the physiological effects of histamine.
Show More
Related formsan′ti•hista•mine′ adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

antihistamine in Science


  1. Any of various drugs that relieve cold or allergy symptoms by blocking the action of histamine.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.