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Definition of morphine noun from the Oxford Advanced American Dictionary

 

morphine

 noun
noun
NAmE//ˈmɔrfin//
 
(old-fashioned morphia
NAmE//ˈmɔrfiə//
 
)
[uncountable]
 
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a powerful drug that is made from opium and used to reduce pain Cancer patients are often prescribed increasing doses of morphine.
See the Oxford Advanced Learner's Dictionary entry: morphine