Where does “Ο” come from?

Ο (Greek) comes from Ancient Greek ὁ, from Proto-Hellenic ho, from Proto-Indo-European só — this; that.

Ο (Greek): The upper case letter omicron (όμικρον), the 15th letter of the modern Greek alphabet

Definitions

  1. The upper case letter omicron (όμικρον), the 15th letter of the modern Greek alphabet

Ancestry of “Ο”, step by step

StepLanguageWordMeaning
1Ancient Greekὁthe; that; he, she, it, they
2Proto-Hellenichothat
3Proto-Indo-Europeansóthis; that
Every word from Proto-Indo-European só →Every word from Proto-Hellenic ho →Every word from Ancient Greek ὁ →