Where does “duodeca-” come from?

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

Ancestry of “duodeca-”, step by step

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

Words derived from “duodeca-”

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