Definition of infectant in English:

infectant

noun

  • An infecting or infectious agent.

adjective

  • Causing infection; infectious.

Origin

Mid 19th century; earliest use found in The London Medical Gazette. From infect + -ant, probably after French infectant, adjective and noun (although this is apparently first attested later than in English: 1854 or earlier).

Pronunciation

infectant

/ɪnˈfɛkt(ə)nt/