Where does “ovatus” come from?

ovatus (Latin) comes from Latin ōvum, from Latin -ātus, from Proto-Italic -ātos, from Proto-Indo-European -éh₂tos.

Ancestry of “ovatus”, step by step

Step	Language	Word	Meaning
1	Latin	ōvum	—
2	Latin	-ātus	—
3	Proto-Italic	-ātos	—
4	Proto-Indo-European	-éh₂tos	—