Where does “ternaire” come from?

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

ternaire (French): ternary

Definitions

ternary

Ancestry of “ternaire”, step by step

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

Words derived from “ternaire”

ternar

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