Where does “trenta-unè” come from?

trenta-unè (Catalan) comes from Catalan trenta-un, from Catalan trenta, from Old Catalan trenta, from Latin trīgintā, from Proto-Indo-European tridḱómt, from Proto-Indo-European tri-, from Proto-Indo-European tréyes — three.

trenta-unè (Catalan): thirty-first

Definitions

thirty-first

Ancestry of “trenta-unè”, step by step

Step	Language	Word	Meaning
1	Catalan	trenta-un	thirty-one
2	Catalan	trenta	thirty
3	Old Catalan	trenta	—
4	Latin	trīgintā	thirty; 30
5	Proto-Indo-European	tridḱómt	thirty
6	Proto-Indo-European	tri-	three, threefold
7	Proto-Indo-European	tréyes	three

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