Where does “unicornuate” come from?

unicornuate (English) comes from English cornuate, from Latin cornuātus, from Latin -ātus, from Proto-Italic -ātos, from Proto-Indo-European -éh₂tos.

unicornuate (English): Resembling a single horn, as a malformed uterus...

Definitions

Step	Language	Word	Meaning
1	English	cornuate	Horn-shaped, as with a bicornuate uterus
2	Latin	cornuātus	—
3	Latin	-ātus	—
4	Proto-Italic	-ātos	—
5	Proto-Indo-European	-éh₂tos	—

unicornuate — Etymology, Origin & Word History | Etymology Explorer