Where does “τριακοστός” come from?

τριακοστός (Ancient Greek) comes from Ancient Greek τριάκοντα, from Proto-Indo-European tridḱómt, from Proto-Indo-European tri-, from Proto-Indo-European tréyes — three.

τριακοστός (Ancient Greek): thirtieth

Definitions

  1. thirtieth

Ancestry of “τριακοστός”, step by step

StepLanguageWordMeaning
1Ancient Greekτριάκονταthirty
2Proto-Indo-Europeantridḱómtthirty
3Proto-Indo-Europeantri-three, threefold
4Proto-Indo-Europeantréyesthree
Every word from Proto-Indo-European tréyes →Every word from Proto-Indo-European tri- →Every word from Proto-Indo-European tridḱómt →