Etymograph

English

trinomial

From tri- + -nomial.

A compound of tri- + -nomial

Proto-Indo-European *tri- ‘three, threefold’

Proto-Italic *tri- ‘three, tri-’

English tri-

Today it means

adj Consisting of three names or parts or terms.

Language periods are conventional ranges, not dates for this word.

Etymograph / trinomial