Where does “*tristos” come from?

*tristos (Proto-Celtic) comes from Proto-Indo-European tri-, from Proto-Indo-European tréyes — three.

Ancestry of “*tristos”, step by step

*tristos traces back through two separate lines of ancestry.

via Proto-Indo-European tri-

StepLanguageWordMeaning
1Proto-Indo-Europeantri-three, threefold
2Proto-Indo-Europeantréyesthree

via Proto-Indo-European *steh₂-

StepLanguageWordMeaning
1Proto-Indo-European*steh₂-—

Words derived from “*tristos”

Every word from Proto-Indo-European tréyes →Every word from Proto-Indo-European tri- →