Definition of infectiousness in US English:

infectiousness

noun

  • See infectious

    • ‘Given that assumption, a mathematical model was developed using data on how infectiousness develops in sheep.’
    • ‘Perhaps this is why the film is best seen in a crowded theatre, where the infectiousness of cathartic emotion can have full play.’
    • ‘An overwhelming majority of persons living with HIV infection do not get detected and remain unknowing of their potential illness and infectiousness to others.’
    • ‘He said infectiousness would reduce when rashes appear three to four days after symptoms' onset.’
    • ‘If one takes these vibrios and cultivates them on nutritional media in the lab, or uses them to infect animal models, their infectiousness declines rapidly.’

Pronunciation

infectiousness

/inˈfekSHəsnəs//ɪnˈfɛkʃəsnəs/