Where does “ternarius” come from?

ternarius (Late Latin) comes from Latin terni, from Latin ter, from Latin terr, from Old Latin tris, from Proto-Italic trēs, from Proto-Indo-European *tréyes.

ternarius (Late Latin): consisting of three things; Containing or...

Definitions

consisting of three things; Containing or...

Ancestry of “ternarius”, step by step

Step	Language	Word	Meaning
1	Latin	terni	three each; three at a time
2	Latin	ter	thrice
3	Latin	terr	—
4	Old Latin	tris	—
5	Proto-Italic	trēs	three
6	Proto-Indo-European	*tréyes	—

Every word from Proto-Indo-European *tréyes →Every word from Proto-Italic trēs →Every word from Old Latin tris →