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English definition of “preventive”

preventive

adjective [before noun]     /prɪˈven.tɪv/ US  /-t̬ɪv/ (also preventative)
C2 intended to stop something before it happens : In the past ten years , preventive measures have radically reduced levels of tooth decay in children . preventative medicine Preventing and impedingLimiting and restricting
(Definition of preventive adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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