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English definition of “safe sex”

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safe sex

noun [U] uk   us  
the use of condoms or other methods of avoiding catching a disease, especially AIDS (= a serious disease that destroys the body's ability to fight infection), from sexual activity with someone else: It's to be hoped that they're practising safe sex.
(Definition of safe sex from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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