Where does “duodecimo” come from?

duodecimo (Italian) comes from Latin duodecimus, from Latin duodecim, from Latin decem, from Latin -nus, from Proto-Italic -nos, from Proto-Indo-European -nós — Creates verbal adjectives from roots.

duodecimo (Italian): twelfth

Definitions

  1. twelfth

Ancestry of “duodecimo”, step by step

StepLanguageWordMeaning
1Latinduodecimustwelfth
2Latinduodecimtwelve; 12; dozen
3Latindecemten; 10
4Latin-nus-an
5Proto-Italic-nosCreates verbal adjectives from verb stems
6Proto-Indo-European-nósCreates verbal adjectives from roots
Every word from Proto-Indo-European -nós →Every word from Latin -nus →Every word from Latin decem →