Where does “decān” come from?

decān (Middle Irish) comes from Latin diāconus, from Ancient Greek διᾱ́κονος — servant, minister.

Ancestry of “decān”, step by step

StepLanguageWordMeaning
1Latindiāconusdeacon
2Ancient Greekδιᾱ́κονοςservant, minister
Every word from Ancient Greek διᾱ́κονοςEvery word from Latin diāconus