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

 

antiviral

 adjective
adjective
BrE BrE//ˌæntiˈvaɪrəl//
 
; NAmE NAmE//ˌæntiˈvaɪrəl//
 
 
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(of a drug) used to treat infectious diseases caused by a virus
See the Oxford Advanced American Dictionary entry: antiviral