antihistamine

play
noun an·ti·his·ta·mine \ -ˈhis-tə-ˌmēn , -mən \

Definition of antihistamine

:any of various compounds that counteract histamine in the body and that are used for treating allergic reactions (such as hay fever) and cold symptoms

antihistamine

adjective

antihistaminic

play \-ˌhis-tə-ˈmi-nik\ adjective or noun

Recent Examples of antihistamine from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'antihistamine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of antihistamine

1933


ANTIHISTAMINE Defined for English Language Learners

antihistamine

play
noun

Definition of antihistamine for English Language Learners

  • medical : a drug that is used to treat allergic reactions and colds


Medical Dictionary

1

antihistamine

play
adjective an·ti·his·ta·mine \ ˌant-i-ˈhis-tə-ˌmēn, ˌan-ˌtī-, -mən \

medical Definition of antihistamine

:tending to block or counteract the physiological action of histamine
  • human blood lacks antihistamine activity

2

antihistamine

noun

medical Definition of antihistamine

:any of various compounds that oppose the actions of histamine and are used especially for treating allergic reactions (as hay fever), cold symptoms, and motion sickness


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