Where does “ὀδόντιον” come from?

ὀδόντιον (Ancient Greek) comes from Ancient Greek ὀδούς, from Proto-Hellenic odónts, from Proto-Indo-European h₃dónts, from Proto-Indo-European h₁ed- — to eat.

Ancestry of “ὀδόντιον”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ὀδούς	A tooth, tusk; anything pointed: spike, prong;...
2	Proto-Hellenic	odónts	tooth
3	Proto-Indo-European	h₃dónts	tooth
4	Proto-Indo-European	h₁ed-	to eat

Words derived from “ὀδόντιον”

δόντιον
δόντι
πονόδοντος
ελεφαντόδοντο

Every word from Proto-Indo-European h₁ed- →Every word from Proto-Indo-European h₃dónts →Every word from Proto-Hellenic odónts →