Where does “focus” come from?

focus (Middle Irish) comes from Old Irish ocus, from Proto-Indo-European ǵʰes- — hand; take, give in exchange.

Ancestry of “focus”, step by step

StepLanguageWordMeaning
1Old Irishocusnear; close; and
2Proto-Indo-Europeanǵʰes-hand; take, give in exchange

Words derived from “focus”

Every word from Proto-Indo-European ǵʰes- →Every word from Old Irish ocus →