Where does “tritare” come from?

tritare (Latin) comes from Latin tritus, from Latin tero, from Proto-Indo-European terh₁- — to rub, turn; to drill, pierce.

Ancestry of “tritare”, step by step

Step	Language	Word	Meaning
1	Latin	tritus	rubbed, triturated; worn out or away, well-worn
2	Latin	tero	I rub or triturate; I wear away or wear out; I...
3	Proto-Indo-European	terh₁-	to rub, turn; to drill, pierce