The story
- Proto-Indo-European*ḱer-
- Proto-Indo-European*ḱerh₂-
- Proto-Hellenic*kérats
- Ancient Greekκέρᾰς (kérăs)
- English todaykerato-
From Ancient Greek κέρας (kéras, “horn”).
Words from the same roots
Ancient Greekκέρας all →
saratogakeratinkeratomileusiscalyceraceouscerargyritecerasdinoceraskeratoglobuskeraulophonkeritekeroidorthoceras
Etymology from Wiktionary, CC BY-SA 4.0.