Where does “tetrad” come from?

Tetrad comes from Ancient Greek τετράς, derived from Proto-Indo-European kʷetwóres, ultimately from the Proto-Indo-European root kʷe-.

tetrad (English): A group of four things; Two pairs of sister...

Definitions

  1. A group of four things; Two pairs of sister...

Ancestry of “tetrad”, step by step

StepLanguageWordMeaning
1Ancient Greekτετράςthe number four; tetrarchy; four-leaved pamphlet,...
2Proto-Indo-Europeankʷetwóresfour
3Proto-Indo-Europeankʷe-and

Words derived from “tetrad”

Every word from Proto-Indo-European kʷe- →Every word from Proto-Indo-European kʷetwóres →Every word from Ancient Greek τετράς →