Where does “nonagesimus” come from?

nonagesimus (Latin) comes from Latin nonaginta, from Latin nūnāgintā, from Proto-Indo-European h₁néwn̥(d)ḱomt, from Proto-Indo-European h₁néwn̥ — nine.

nonagesimus (Latin): ninetieth

Definitions

ninetieth

Ancestry of “nonagesimus”, step by step

Step	Language	Word	Meaning
1	Latin	nonaginta	ninety; 90
2	Latin	nūnāgintā	—
3	Proto-Indo-European	h₁néwn̥(d)ḱomt	nine tens
4	Proto-Indo-European	h₁néwn̥	nine

Every word from Proto-Indo-European h₁néwn̥ →

nonagesimus — Etymology, Origin & Word History | Etymology Explorer