Where does “bi-” come from?

bi- (Translingual) comes from Ancient Greek γῦρος, from Ancient Greek μίτρα, from Proto-Indo-European mey- — to strengthen; to bind; to change, exchange.

Ancestry of “bi-”, step by step

bi- traces back through two separate lines of ancestry.

via Ancient Greek γῦρος

StepLanguageWordMeaning
1Ancient Greekγῦροςring, circle
2Ancient GreekμίτραA metal guard worn round the waist; A maiden's...
3Proto-Indo-Europeanmey-to strengthen; to bind; to change, exchange

via Latin bi

StepLanguageWordMeaning
1Latinbitwo

Words derived from “bi-

Every word from Proto-Indo-European mey-Every word from Ancient Greek μίτραEvery word from Ancient Greek γῦρος