Where does “bi-” come from?

bi- (Latin) comes from Ancient Greek κύκλος, from Proto-Indo-European kʷékʷlos, from Proto-Indo-European kʷel- — to turn.

bi- (Latin): having two parts; occurring twice

Definitions

  1. having two parts; occurring twice

Ancestry of “bi-”, step by step

bi- traces back through two separate lines of ancestry.

via Ancient Greek κύκλος

StepLanguageWordMeaning
1Ancient Greekκύκλοςcircle, ring; Any circular object, such as a...
2Proto-Indo-Europeankʷékʷloswheel; circle
3Proto-Indo-Europeankʷel-to turn

via Proto-Italic *dwi-

StepLanguageWordMeaning
1Proto-Italic*dwi-two, bi-, di

Words derived from “bi-

Every word from Proto-Indo-European kʷel-