Where does “duodecim” come from?

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

duodecim (Latin): twelve; 12; dozen

Definitions

  1. twelve; 12; dozen

Ancestry of “duodecim”, step by step

duodecim traces back through two separate lines of ancestry.

via Latin decem

StepLanguageWordMeaning
1Latindecemten; 10
2Latin-nus-an
3Proto-Italic-nosCreates verbal adjectives from verb stems
4Proto-Indo-European-nósCreates verbal adjectives from roots

via Latin duō

StepLanguageWordMeaning
1Latinduōtwo; 2
2Proto-Italicduōtwo
3Proto-Indo-Europeandwóh₁two

Words derived from “duodecim”

Every word from Proto-Indo-European -nós →Every word from Latin -nus →Every word from Latin decem →
duodecim — Etymology, Origin & Word History | Etymology Explorer