Where does “novendecim” come from?

novendecim (Latin) comes from Latin novem, from Latin novo, from Proto-Italic nowāō, from Proto-Indo-European néweh₂ti, from Proto-Indo-European néwos, from Proto-Indo-European new- — new; to nod, assent to.

novendecim (Latin): nineteen; 19

Definitions

nineteen; 19

Ancestry of “novendecim”, step by step

novendecim traces back through two separate lines of ancestry.

via Latin novem

Step	Language	Word	Meaning
1	Latin	novem	nine; 9; first-person singular present active...
2	Latin	novo	I make new, renew, refresh; I alter, change;...
3	Proto-Italic	nowāō	—
4	Proto-Indo-European	néweh₂ti	to renew
5	Proto-Indo-European	néwos	new
6	Proto-Indo-European	new-	new; to nod, assent to

via Latin decem

Step	Language	Word	Meaning
1	Latin	decem	ten; 10
2	Latin	-nus	-an
3	Proto-Italic	-nos	Creates verbal adjectives from verb stems
4	Proto-Indo-European	-nós	Creates verbal adjectives from roots

Every word from Proto-Indo-European new- →Every word from Proto-Indo-European néwos →Every word from Proto-Indo-European néweh₂ti →