[ an-ti-his-tuh-meen, -min ]
/ ˌæn tɪˈhɪs təˌmin, -mɪn /

noun Physiology, Pharmacology.

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.

Origin of antihistamine

First recorded in 1930–35; anti- + histamine Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for antihistamines

British Dictionary definitions for antihistamines


/ (ˌæntɪˈhɪstəˌmiːn, -mɪn) /


any drug that neutralizes the effects of histamine, used esp in the treatment of allergies
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

Medicine definitions for antihistamines


[ ăn′tē-hĭstə-mēn′, -mĭn ]


Any of several drugs used to counteract the physiological effects of histamine.

Related forms

an′ti•hista•mine′ adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for antihistamines


[ ăn′tē-hĭstə-mēn′ ]

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

Culture definitions for antihistamines


[ (an-tee-his-tuh-meenz, an-tee-his-tuh-muhnz) ]

Drugs that counteract the effects of a substance in the body called histamine. The body releases histamine, which causes many of the symptoms associated with allergies (sneezing, watery eyes, runny nose), in response to external agents such as pollen.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.