Definition of preventive adjective from the Oxford Advanced Learner's Dictionary

 

preventive

 adjective
adjective
BrE BrE//prɪˈventɪv//
 
; NAmE NAmE//prɪˈventɪv//
 
(also preventative
BrE BrE//prɪˈventətɪv//
 
; NAmE NAmE//prɪˈventətɪv//
 
)
[only before noun]
 
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intended to try to stop something that causes problems or difficulties from happening preventive medicine The police were able to take preventive action and avoid a possible riot. compare curative
See the Oxford Advanced American Dictionary entry: preventive