follow Dictionary.com

11 Trending Words of 2014

ephedrine

[ih-fed-rin, ef-i-dreen, -drin] /ɪˈfɛd rɪn, ˈɛf ɪˌdrin, -drɪn/
noun, Pharmacology
1.
a white, crystalline alkaloid, C 10 H 15 N, obtained from a species of Ephedra or synthesized: used in medicine chiefly for the treatment of asthma, hay fever, and colds.
Origin
1885-1890
1885-90; < New Latin Ephedr(a) ephedra + -ine2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for ephedrine
  • Several contain ephedrine, the active ingredient in a widely advertised over-the-counter asthma remedy.
British Dictionary definitions for ephedrine

ephedrine

/ɪˈfɛdrɪn; ˈɛfɪˌdriːn; -drɪn/
noun
1.
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: C6H5CH(OH)CH(NHCH3)CH3
Word Origin
C19: from New Latin ephedra + -ine²
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
Cite This Source
Word Origin and History for ephedrine
n.

1889, named 1887 by Japanese organic chemist Nagai Nagayoshi (1844-1929), from the plant ephedra, from which it was first extracted, + chemical suffix -ine (2).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
ephedrine in Medicine

ephedrine e·phed·rine (ĭ-fěd'rĭn, ěf'ĭ-drēn')
n.
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.
Cite This Source
ephedrine in Science
ephedrine
  (ĭ-fěd'rĭn, ěf'ĭ-drēn')   
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 © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Encyclopedia Article for ephedrine

alkaloid used as a decongestant drug. It is obtainable from plants of the genus Ephedra, particularly the Chinese species E. sinica, and it has been used in China for more than 5,000 years to treat asthma and hay fever. It is effective when administered orally, and its effects persist for several hours, in contrast to the shorter-acting norepinephrine. Since the 1920s synthetic ephedrine has been used in Western medicine as a bronchodilator and nasal decongestant and in controlling urinary incontinence. When its longer duration of action is desirable, ephedrine replaces epinephrine in nonemergency treatment of allergic reactions. Its slow action renders it useless in arresting acute allergic attacks. Because of its stimulant effects, ephedrine must sometimes be used in combination with sedatives.

Learn more about ephedrine with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Difficulty index for ephedrine

Few English speakers likely know this word

Word Value for ephedrine

0
16
Scrabble Words With Friends

Nearby words for ephedrine