Where does “Titan” come from?

Titan derives from Ancient Greek Τιτάν, itself from Ancient Greek τίτο, whose original meaning remains unknown.

Titan (English): Any of the race of giant gods in Greek mythology...

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	Τιτάν	Titan
2	Translingual	-therium	—
3	Ancient Greek	θηρίον	wild animal, beast, savage beast; a small animal,...
4	Ancient Greek	θήρ	a wild beast, beast of prey, especially a lion;...
5	Proto-Hellenic	kʷʰḗr	wild beast
6	Proto-Indo-European	ǵʰwer-	wild; wild animal

Titan — Etymology, Origin & Word History | Etymology Explorer