Definition of antihistamine in English:

antihistamine

Syllabification: an·ti·his·ta·mine
Pronunciation: /ˌan(t)ēˈhistəmēn
 
, ˌanˌtīˈhistəmēn
 
/

noun

A drug or other compound that inhibits the physiological effects of histamine, used especially in the treatment of allergies.
More example sentences
  • Hay fever or some old fashioned antihistamine treatments with side effect drowsiness can generally impede your life style.
  • Your doctor might have you use antihistamine pills, a steroid cream, calamine lotion, or zinc oxide cream.
  • If this is not helpful, your doctor may prescribe stronger steroids or antihistamine pills.

Definition of antihistamine in:

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Pronunciation: dɪˈmɒrəlʌɪz
verb
cause (someone) to lose confidence or hope