Meaning of diphenhydramine

di•phen•hy•dra•mine

Pronunciation: (dī"fen-hī'dru-mēn"), [key]
— n. Pharm.
  1. a white, crystalline, antihistaminic compound, CHNO, used orally, topically, and parenterally, esp. for allergies.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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