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

 

orgasm

 noun
noun
BrE BrE//ˈɔːɡæzəm//
 
; NAmE NAmE//ˈɔːrɡæzəm//
 
[uncountable, countable]
 
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the moment during sexual activity when feelings of sexual pleasure are at their strongest to achieve/reach orgasm to have an orgasm Word Origin late 17th cent.: from French orgasme, or from modern Latin orgasmus, from Greek orgasmos, from organ ‘swell or be excited’.
See the Oxford Advanced American Dictionary entry: orgasm