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/ˈmɔː.fiːn/ · noun
(biochemistry, pharmacology) A crystalline alkaloid (4,5-epoxy-17-methyl-7,8-didehydromorphinan-3,6-diol), extracted from opium, the salts of which are soluble in water and are used as analgesics, anaesthetics and sedatives; it is one of a group of morphine alkaloids..
Use morphine when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Morphine means (biochemistry, pharmacology) A crystalline alkaloid (4,5-epoxy-17-methyl-7,8-didehydromorphinan-3,6-diol), extracted from opium, the salts of which are soluble in water and are used as analgesics, anaesthetics and sedatives; it is one of a group of morphine alkaloids..
Common synonyms include morphia.
The opposite depends on the specific sense.
Use morphine where its definition matches the intended context.
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