Where does “trijumeau” come from?

trijumeau (French) comes from French jumeau, from Old French gemel, from Latin gemellus, from Latin -lus, from Proto-Italic -elos, from Proto-Indo-European -e-lós, from Proto-Indo-European -lós — Forms agent nouns from verbal roots.

trijumeau (French): trigeminal

Definitions

  1. trigeminal

Ancestry of “trijumeau”, step by step

StepLanguageWordMeaning
1Frenchjumeautwin
2Old Frenchgemel—
3Latingemellustwin
4Latin-lusAlternative form of -ulus; diminutive suffix
5Proto-Italic-elosForms desubstantival and deadjectival diminutive nouns
6Proto-Indo-European-e-lós—
7Proto-Indo-European-lósForms agent nouns from verbal roots
Every word from Proto-Indo-European -lós →Every word from Latin -lus →Every word from Latin gemellus →