The story
- Ancient Greekβακτηρία (baktēría)
- Ancient Greekβακτήριον (baktḗrion)
- New Latinbactērium
- Englishbacterium
- Proto-Indo-European*kh₂eyd-
- Proto-Indo-European*kh₂éydeti
- Proto-Italic*kaidō
- Latincaedō
- Englishbactericide
- English todaybactericidin
From bactericide + -in.
Etymology from Wiktionary, CC BY-SA 4.0.