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

 

infective

 adjective
adjective
BrE BrE//ɪnˈfektɪv//
 
; NAmE NAmE//ɪnˈfektɪv//
 
(medical)
 
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able to cause infection Word Origin late Middle English: from Latin infectivus, from inficere ‘to taint’, from in- ‘into’ + facere ‘put, do’.
See the Oxford Advanced American Dictionary entry: infective