Definition of infectionist in English:

infectionist

noun

Medicine
historical
  • A person who believes that a particular disease is infectious (i.e. spread by indirect means, as by contaminated water) rather than contagious (i.e. spread by close contact with the sick).

Origin

Mid 19th century. From infection + -ist, after French infectionniste.

Pronunciation

infectionist

/ɪnˈfɛkʃ(ə)nɪst/