English
infectionist
From infection + -ist.
Formed from infection + -ist
Proto-Indo-European *dʰeh₁k-
…
Latin faciō ‘to perform, do’
Latin īnficiō ‘to corrupt, to poison, to spoil, to taint, to…’
Late Latin īnfectiō
Old French infection
English infection
Today it means
noun One who believed that diseases were spread by infection.
Language periods are conventional ranges, not dates for this word.
Etymograph / infectionist