Where does “decán” come from?

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

Ancestry of “decán”, step by step

decán traces back through two separate lines of ancestry.

via Latin decanus

StepLanguageWordMeaning
1Latindecanuschief of ten people; dean
2Latindecemten; 10
3Latin-nus-an
4Proto-Italic-nosCreates verbal adjectives from verb stems
5Proto-Indo-European-nósCreates verbal adjectives from roots

via Latin diaconus

StepLanguageWordMeaning
1Latindiaconusdeacon
2Ancient Greekδιᾱ́κονοςservant, minister

Words derived from “decán”

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