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



    BrE BrE//ˌprɒfɪˈlæktɪk//
    ; NAmE NAmE//ˌproʊfəˈlæktɪk//
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  1. 1(medical) a medicine, device or course of action that prevents disease
  2. 2(North American English, formal) = condom
  3. Word Originlate 16th cent.: from French prophylactique, from Greek prophulaktikos, from pro ‘before’ + phulassein ‘to guard’.
See the Oxford Advanced American Dictionary entry: prophylactic

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