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Synonyms

morphine

American  
[mawr-feen] / ˈmɔr fin /
Also morphia

noun

Pharmacology.
  1. 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.


morphine British  
/ ˈmɔːfiːn, ˈmɔːfɪə /

noun

  1. an alkaloid extracted from opium: used in medicine as an analgesic and sedative, although repeated use causes addiction. Formula: C 17 H 19 NO 3

"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

morphine Scientific  
/ môrfēn′ /
  1. A highly addictive drug derived from opium and used to treat intractable pain, as in severe injury or metastatic cancer.


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


Other Word Forms

Etymology

Origin of morphine

From the German word Morphin, dating back to 1820–30. See Morpheus, -ine 2

Explanation

Morphine is a pain-relieving medication. Someone who's in the hospital recovering from an accident or surgery might be prescribed morphine. Morphine is a powerful narcotic that's related to opium — it's an opiate. Because of its strength and the danger of patients becoming addicted to it (as well as some nasty side effects), morphine is only prescribed in serious cases. Morphine is the French version of a word coined by a German pharmacist, Morphin, after the Ancient Greek god Morpheus, the god of dreams.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Then again, Dossett, who was dying of cancer, also had a morphine pump surgically implanted in his chest.

From The Wall Street Journal • May 1, 2026

Sasse, who was diagnosed with Stage 4 pancreatic cancer in December, has credited daraxonrasib with shrinking tumors and alleviating his pain along with morphine, touting it as a “miracle drug” in a recent interview.

From Barron's • Apr. 28, 2026

To better understand how morphine works, researchers studied brain cells involved in tracking pain signals.

From Science Daily • Mar. 28, 2026

He said nurses were "amazing" and administered adrenaline, morphine and co-codamol for the pain.

From BBC • Aug. 20, 2024

“I’ll come back with your morphine and a glass of water, Kaka jan,” Soraya said.

From "The Kite Runner" by Khaled Hosseini

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