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English definition of “diaphragm”

diaphragm

noun [C] (BIRTH CONTROL)    /ˈdaɪ.ə.fræm/
a circular rubber device that a woman puts inside her vagina before having sex, to avoid becoming pregnantContraception
(Definition of diaphragm noun (BIRTH CONTROL) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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