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narceine

[nahr-see-een, -in] /ˈnɑr siˌin, -ɪn/
noun, Pharmacology
1.
a narcotic alkaloid, C 2 3 H 2 7 NO 8 , occurring in opium and acting as a mild relaxant on smooth muscle.
Origin
< French narcéine (1832), irregular < Greek nárkē numbness (see narco-) + French -ine -ine2
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for narceine

narceine

/ˈnɑːsiːn/
noun
1.
a narcotic alkaloid that occurs in opium. Formula: C23H27O8N
Word Origin
C19: via French from Greek narkē numbness
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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