The story
- Proto-Indo-European*h₁n̥dóm
- Proto-Hellenic*éndon
- Ancient Greekἔνδον (éndon)
- Englishendo-
- Ancient Greekτόξον (tóxon)
- Ancient Greekτοξῐκός (toxĭkós)
- Ancient Greekτοξικόν (toxikón)
- Latintoxicum
- Englishtoxin
- English todayendotoxin
Etymology from Wiktionary, CC BY-SA 4.0.