[ dahy-fen-hahy-druh-meen ]
/ ˌdaɪ fɛnˈhaɪ drəˌmin /
a white, crystalline, antihistaminic compound, C17H21NO, used orally, topically, and parenterally, especially for allergies.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Medical definitions for diphenhydramine
[ dī′fĕn-hī′drə-mēn′, -mĭn ]
An antihistamine usually used to treat respiratory symptoms and allergic conditions, such as hay fever, hives, and allergic rhinitis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.