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See more synonyms for dimenhydrinate on Thesaurus.com
noun Pharmacology.
  1. a synthetic, crystalline, antihistamine powder, C17H22NO⋅C7H6ClN4O2, used in the treatment of allergic disorders and as a preventive for seasickness and airsickness.
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Origin of dimenhydrinate

First recorded in 1945–50; dime(thyl) + (ami)n(e) + hydr(am)ine + -ate2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for dimenhydrinate


  1. a white slightly soluble bitter-tasting crystalline substance: an antihistamine used in the prevention of nausea, esp in travel sickness. Formula: C 24 H 28 ClN 5 O 3
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Word Origin

from dime (thyl + ami) n (e) + (diphen) hydr (am) in (e) + -ate 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

dimenhydrinate in Medicine


  1. An antihistamine used to treat motion sickness and allergic disorders.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.