Where does “duope” come from?

duope (Esperanto) comes from Esperanto -ope, from Ancient Greek ὤψ, from Proto-Hellenic ókʷs, from Proto-Indo-European h₃ókʷs, from Proto-Indo-European h₃ekʷ- — to see; eye.

duope (Esperanto): by twos

Definitions

  1. by twos

Ancestry of “duope”, step by step

StepLanguageWordMeaning
1Esperanto-opeMarks collective numerals
2Ancient Greekὤψto the eye; in the face; eye
3Proto-Hellenicókʷseye
4Proto-Indo-Europeanh₃ókʷseye
5Proto-Indo-Europeanh₃ekʷ-to see; eye
Every word from Proto-Indo-European h₃ekʷ- →Every word from Proto-Indo-European h₃ókʷs →Every word from Proto-Hellenic ókʷs →