English

trivalency

From tri- + valency.

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

Proto-Italic *tri- ‘three, tri-’

English tri-

Proto-Indo-European *h₂welh₁-

…

Proto-Italic *walēō ‘to be strong’

Latin valeō ‘to be well, healthy, sound’

Latin valēns ‘strong, healthy’

Late Latin valentia

Today it means

noun The condition of being trivalent; trivalence.

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

Etymograph / trivalency