Definition of infect verb from the Oxford Advanced American Dictionary

      

    infect

     verb
    verb
    NAmE//ɪnˈfɛkt//
     
    Verb Forms present simple I / you / we / they infect
     
    he / she / it infects
     
    past simple infected
     
    -ing form infecting
     
     
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  1. 1to 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
  2. 2infect 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
  4. 4 infect somebody (with something) to make someone share a particular feeling She infected the children with her enthusiasm for music. The whole room was soon infected by his laughter.
See the Oxford Advanced Learner's Dictionary entry: infect