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

prophylactic

adjective
 
/ˌprɒfəˈlæktɪk/
 
/ˌprəʊfəˈlæktɪk/
(medical)
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  1. done or used in order to prevent a disease
    • prophylactic treatment
    Word Originlate 16th cent.: from French prophylactique, from Greek prophulaktikos, from pro ‘before’ + phulassein ‘to guard’.
See prophylactic in the Oxford Advanced American Dictionary
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brink
noun
 
 
From the Topic
Danger
C2
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