Where does “titio” come from?

titio (Latin) comes from Proto-Italic tītjō, from Proto-Indo-European teih₁- — to become hot, melt "or" to end.

titio (Latin): firebrand

Definitions

Step	Language	Word	Meaning
1	Proto-Italic	tītjō	heating
2	Proto-Indo-European	teih₁-	to become hot, melt "or" to end

titio — Etymology, Origin & Word History | Etymology Explorer