Where does “onze” come from?

onze (Catalan) comes from Latin undecim, from Latin oinodecem, from Proto-Indo-European óynom déḱm̥t.

onze (Catalan): eleventh

Definitions

Step	Language	Word	Meaning
1	Latin	undecim	eleven; 11
2	Latin	oinodecem	—
3	Proto-Indo-European	óynom déḱm̥t	—

onze — Etymology, Origin & Word History | Etymology Explorer