Definition of infect verb from the Oxford Advanced Learner's Dictionary

      

    infect

     verb
    verb
    BrE BrE//ɪnˈfekt//
     
    ; NAmE NAmE//ɪnˈfekt//
     
    Verb Forms present simple I / you / we / they infect
    BrE BrE//ɪnˈfekt//
     
    ; NAmE NAmE//ɪnˈfekt//
     
    he / she / it infects
    BrE BrE//ɪnˈfekts//
     
    ; NAmE NAmE//ɪnˈfekts//
     
    past simple infected
    BrE BrE//ɪnˈfektɪd//
     
    ; NAmE NAmE//ɪnˈfektɪd//
     
    past participle infected
    BrE BrE//ɪnˈfektɪd//
     
    ; NAmE NAmE//ɪnˈfektɪd//
     
    -ing form infecting
    BrE BrE//ɪnˈfektɪŋ//
     
    ; NAmE NAmE//ɪnˈfektɪŋ//
     
    Computer problems, Ailments and diseases, Being ill
     
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  1. 1  to make a disease or an illness spread to a person, an animal or a plant infect somebody/something It is not possible to infect another person through kissing. infect somebody/something with something people infected with HIV See related entries: Ailments and diseases, Being ill
  2. 2  infect something (with something) [usually passive] to make a substance contain harmful bacteria that can spread disease synonym contaminate eggs infected with salmonella
  3. 3infect something (with something) to make a computer virus spread to another computer or program See related entries: Computer problems
  4. 4infect somebody (with something) to make somebody share a particular feeling She infected the children with her enthusiasm for music. The whole room was soon infected by his laughter.
  5. Word Origin late Middle English: from Latin infect- ‘tainted’, from the verb inficere, from in- ‘into’ + facere ‘put, do’.
See the Oxford Advanced American Dictionary entry: infect