Where does “trigeminal” come from?

Trigeminal derives from Latin tri- meaning "three," from Latin tres, ultimately from Proto-Indo-European tréyes with the same sense.

trigeminal (English): Of or pertaining to the trigeminal nerve;...

Definitions

  1. Of or pertaining to the trigeminal nerve;...

Ancestry of “trigeminal”, step by step

trigeminal traces back through 3 separate lines of ancestry.

via Italian trigemino

StepLanguageWordMeaning
1Italiantrigeminotriplet; trigeminal
2Italiangeminotwin; geminous; first-person singular present...
3LatinGeminustwinborn, twin
4Latingeminustwin; double, paired; a twin
5Proto-Italicjemanos
6Proto-Indo-EuropeanyemH-twin

via English geminal

StepLanguageWordMeaning
1EnglishgeminalDescribing identical atoms or groups attached to...

via Latin trigeminus

StepLanguageWordMeaning
1Latintrigeminusborn three together

Words derived from “trigeminal

Every word from Proto-Indo-European yemH-