Where does “octodecim” come from?

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

octodecim (Latin): eighteen; 18

Definitions

  1. eighteen; 18

Ancestry of “octodecim”, step by step

octodecim 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 octō

StepLanguageWordMeaning
1Latinoctōeight; 8
2Proto-Italicoktōeight
3Proto-Indo-Europeanoḱtṓweight
4Proto-Indo-Europeanaḱ-sharp, pointed; sharp, pointed, edgy; sharp,...

Words derived from “octodecim”

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