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Pronunciation varies by accent · noun
(pharmacology) An alkaloid contained in opium, occurring as fine white, silky crystals, slightly soluble in water, used as a substitute for morphine..
Use narceine when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Narceine means (pharmacology) An alkaloid contained in opium, occurring as fine white, silky crystals, slightly soluble in water, used as a substitute for morphine..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use narceine where its definition matches the intended context.
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