The story
- Proto-Indo-European*steh₃-
- Proto-Indo-European*stéh₃mn̥
- Proto-Hellenic[Term?]
- Ancient Greekστόμα (stóma)
- New Latinstoma
- English todaystoma
Borrowed from New Latin stoma, from Ancient Greek στόμα (stóma, “mouth”).
Etymology from Wiktionary, CC BY-SA 4.0.