noun Pharmacology.
a synthetic, crystalline, antihistamine powder, C 17 H 22 NO⋅C 7 H 6 ClN 4 O 2 , used in the treatment of allergic disorders and as a preventive for seasickness and airsickness.

1945–50; dime(thyl) + (ami)n(e) + hydr(am)ine + -ate2

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World English Dictionary
dimenhydrinate (ˌdaɪmɛnˈhaɪdrɪˌneɪt)
a white slightly soluble bitter-tasting crystalline substance: an antihistamine used in the prevention of nausea, esp in travel sickness. Formula: C24H28ClN5O3
[from dime(thyl + ami)n(e) + (diphen)hydr(am)in(e) + -ate1]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

dimenhydrinate di·men·hy·dri·nate (dī'měn-hī'drə-nāt')
An antihistamine used to treat motion sickness and allergic disorders.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Britannica


antihistamine used to treat nausea, chiefly that which occurs in motion sickness, and also in the symptomatic treatment of vertigo, such as in Meniere syndrome, a disease of the inner ear. Dimenhydrinate, a synthetic drug introduced into medicine in 1949, is administered orally in tablet or syrup form. Its duration of action is about four hours. The most common side effect is drowsiness.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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