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What is codeine?

codeine

 [koh-deen]   Origin

co·deine

   [koh-deen]
noun Pharmacology.
a white, crystalline, slightly bitter alkaloid, C18H21NO3, obtained from opium, used in medicine chiefly as an analgesic or sedative and to inhibit coughing.
Also, co·de·ia  [koh-dee-uh] , co·de·i·na  [koh-dee-ee-nuh] .

Origin:
1830–40; < Greek kṓde(ia) head, poppy-head + -ine2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Codeine is always a great word to know.
So is doohickey. Does it mean:
a gadget; dingus; thingumbob.
a chattering or flighty, light-headed person.
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Collins
World English Dictionary
codeine (ˈkəʊdiːn)
 
—n
a white crystalline alkaloid prepared mainly from morphine and having a similar but milder action. It is used as an analgesic, an antidiarrhoeal, and to relieve coughing. Formula: C18H21NO3
 
[C19: from Greek kōdeia head of a poppy, from kōos hollow place + -ine²]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

codeine
1838, from Fr. codéine, coined from Gk. kodeia "poppy head." Originally codeina, modern form is from 1881.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

codeine co·deine (kō'dēn', -dē-ĭn)
n.
An alkaloid narcotic derived from opium or morphine and used as a cough suppressant, analgesic, and hypnotic. Also called methylmorphine.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
codeine   (kō'dēn')  Pronunciation Key 
An alkaloid narcotic derived from opium or morphine and used primarily as an analgesic and a cough suppressant. Chemical formula: C18H21NO3.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Cultural Dictionary
codeine [(koh-deen)]

A drug obtained from opium or morphine that is used as a pain reliever and cough remedy.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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