noun Pharmacology.
a white, bitter, crystalline alkaloid, C 1 7 H 1 9 NO 3 ⋅H 2 O, the most important narcotic and addictive principle of opium, obtained by extraction and crystallization and used chiefly in medicine as a pain reliever and sedative.
Also, morphia [mawr-fee-uh] .

1820–30; < German Morphin. See Morpheus, -ine2

morphinic [mawr-fin-ik] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
morphine or morphia (ˈmɔːfiːn, ˈmɔːfɪə)
an alkaloid extracted from opium: used in medicine as an analgesic and sedative, although repeated use causes addiction. Formula: C17H19NO3
[C19: from French, from Morpheus]
morphia or morphia
[C19: from French, from Morpheus]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1828, from Fr. morphine or Ger. Morphin (1816), name coined in allusion to L. Morpheus, Ovid's name for the god of dreams, from Gk. morphe "form, shape, beauty, outward appearance," perhaps from PIE *merph-, a possible Gk. root meaning "form," of unknown origin. So called
because of the drug's sleep-inducing properties.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

morphine mor·phine (môr'fēn')
A bitter crystalline alkaloid extracted from opium, the soluble salts of which are used in medicine as an analgesic, a light anesthetic, or a sedative. Also called morphia.

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
morphine   (môr'fēn')  Pronunciation Key 
A highly addictive drug derived from opium and used to treat intractable pain, as in severe injury or metastatic cancer.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary
morphine [(mawr-feen)]

An addictive drug derived from opium that is used as an analgesic and sedative.

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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Example sentences
Field surgery is performed with rudimentary equipment and morphine is scarce.
He must have calculated how much morphine he could inject without losing
  control of a scalpel.
Researchers find that humans produce their own morphine.
The bloodstream floods with endorphins-the closest thing to morphine that the
  body produces.
Images for morphine
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