Where does “Vulcānus” come from?

Vulcānus (Latin) comes from Ancient Greek ὀδών — Ionic form of ὀδούς.

Ancestry of “Vulcānus”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ὀδών	Ionic form of ὀδούς

Vulcānus — Etymology, Origin & Word History | Etymology Explorer