Where does “Decembrius” come from?

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

Ancestry of “Decembrius”, step by step

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

Words derived from “Decembrius

Every word from Proto-Indo-European -nósEvery word from Latin -nusEvery word from Latin decem