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Definition of: thebaine
(thē′bə·ēn, thi·bā′ēn, -in) noun Chem.
A silvery–white, poisonous, crystalline alkaloid, C19H21O3N, found in opium and resembling strychnine in action: also called paramorphine. Also the′ba·in (-in). [from Egyptian Thebes, where a kind of opium was produced + -INE2]
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