Where does “treyenta” come from?

treyenta (Old Spanish) comes from Latin trīgintā, from Proto-Indo-European tridḱómt, from Proto-Indo-European tri-, from Proto-Indo-European tréyes — three.

Ancestry of “treyenta”, step by step

StepLanguageWordMeaning
1Latintrīgintāthirty; 30
2Proto-Indo-Europeantridḱómtthirty
3Proto-Indo-Europeantri-three, threefold
4Proto-Indo-Europeantréyesthree

Words derived from “treyenta”

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