Definition of potency noun from the Oxford Advanced Learner's Dictionary

     

    potency

     noun
    noun
    BrE BrE//ˈpəʊtnsi//
     
    ; NAmE NAmE//ˈpoʊtnsi//
     
    (pl. potencies)
     
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  1. 1[uncountable, countable] the power that somebody/something has to affect your body or mind the potency of desire If you keep a medicine too long, it may lose its potency. a low potency drug
  2. 2[uncountable] the ability of a man to have sex
See the Oxford Advanced American Dictionary entry: potency