Where does “duodecimale” come from?

duodecimale (Italian) comes from Italian decimale, from Late Latin decimalis, from Latin Decimus, from Latin decem, from Latin -nus, from Proto-Italic -nos, from Proto-Indo-European -nós — Creates verbal adjectives from roots.

duodecimale (Italian): duodecimal

Definitions

duodecimal

Ancestry of “duodecimale”, step by step

Step	Language	Word	Meaning
1	Italian	decimale	decimal
2	Late Latin	decimalis	decimal
3	Latin	Decimus	originally used for a tenth-born son
4	Latin	decem	ten; 10
5	Latin	-nus	-an
6	Proto-Italic	-nos	Creates verbal adjectives from verb stems
7	Proto-Indo-European	-nós	Creates verbal adjectives from roots

Every word from Proto-Indo-European -nós →Every word from Latin -nus →Every word from Latin decem →