Where does “triandrus” come from?

triandrus (Latin) comes from Ancient Greek τρι-, from Ancient Greek τρεῖς, from Proto-Hellenic tréyes, from Proto-Indo-European *tréyes.

Ancestry of “triandrus”, step by step

StepLanguageWordMeaning
1Ancient Greekτρι-tri-
2Ancient Greekτρεῖςthree
3Proto-Hellenictréyesthree
4Proto-Indo-European*tréyes—
Every word from Proto-Indo-European *tréyes →Every word from Proto-Hellenic tréyes →Every word from Ancient Greek τρεῖς →