Where does “trivalent” come from?

Trivalent comes from Latin tri- meaning three, from Latin tres, ultimately from Proto-Indo-European tréyes meaning three.

trivalent (English): Having a valence of three; Protecting against...

Definitions

  1. Having a valence of three; Protecting against...

Ancestry of “trivalent”, step by step

trivalent traces back through two separate lines of ancestry.

via English valent

StepLanguageWordMeaning
1EnglishvalentHaving valence
2EnglishValenceThe number of arguments that a verb can have, including its subject, ranging from zero to three or, less commonly, four
3FrenchValencevalence
4LatinValentiahealth, vigour, bodily strength
5Latin-iaUsed to form a feminine abstract noun, usually...
6Latin-iusforming adjectives from nouns; nominative neuter...
7Proto-Italic-jōsForms comparative adjectives
8Proto-Indo-European-yósCreates adjectives from noun or verb stems

via English tri

StepLanguageWordMeaning
1Englishtritriathlon; triangle
2Proto-Indo-Europeantréyesthree

Words derived from “trivalent

Every word from Proto-Indo-European -yós
trivalent — Etymology, Origin & Word History | Etymology Explorer