[ih-fed-rin, ef-i-dreen, -drin]
- a white, crystalline alkaloid, C10H15N, obtained from a species of Ephedra or synthesized: used in medicine chiefly for the treatment of asthma, hay fever, and colds.
Origin of ephedrine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ephedrine
Combination of ephedrine and homatropine hydrochlorates (100:1).Merck's 1899 Manual
Merck & Co.
- a white crystalline alkaloid obtained from plants of the genus Ephedra: used for the treatment of asthma and hay fever; l-phenyl-2-methylaminopropanol. Formula: C 6 H 5 CH(OH)CH(NHCH 3)CH 3
C19: from New Latin ephedra + -ine ²
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
Word Origin and History for ephedrine
Online Etymology Dictionary, © 2010 Douglas Harper
- An odorless crystalline or powdered alkaloid isolated from shrubs of the genus Ephedra or made synthetically and used in the treatment of allergies and asthma.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A white, odorless, powdered or crystalline alkaloid isolated from shrubs of the genus Ephedra or made synthetically. It is used in the treatment of allergies and asthma. Chemical formula: C10H15NO.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.