Where does “tri” come from?

tri (Norwegian Nynorsk) comes from Old Norse þrír, from Proto-Norse ᚦᚱᛁᛃᛟᛉ, from Proto-Germanic þrīz, from Proto-Indo-European *tréyes.

tri (Norwegian Nynorsk): three; form removed with the spelling reform of...

Definitions

  1. three; form removed with the spelling reform of...

Ancestry of “tri”, step by step

tri traces back through two separate lines of ancestry.

via Old Norse þrír

StepLanguageWordMeaning
1Old Norseþrírthree
2Proto-Norseᚦᚱᛁᛃᛟᛉthree
3Proto-Germanicþrīzthree
4Proto-Indo-European*tréyes—

via Ancient Greek τρεῖς

StepLanguageWordMeaning
1Ancient Greekτρεῖςthree
2Proto-Hellenictréyesthree
Every word from Proto-Indo-European *tréyes →Every word from Proto-Germanic þrīz →Every word from Proto-Norse ᚦᚱᛁᛃᛟᛉ →