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Definition of opioid adjective from the Oxford Advanced Learner's Dictionary

opioid

adjective
 
/ˈəʊpiɔɪd/
 
/ˈəʊpiɔɪd/
 [only before noun]
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  1. relating to opioids
    • Opioid addiction has become a serious problem.
    Topics Healthcarec2, Social issuesc2
    Word Origin1950s: from opium + -oid.
Check pronunciation: opioid

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