Where does “двух” come from?

двух (Russian) comes from Russian два, from Old East Slavic дъва, from Proto-Slavic dъva, from Proto-Balto-Slavic duwō, from Proto-Indo-European dwóh₁ — two.

двух (Russian): inflection of два : ## genitive/prepositional ##...

Definitions

  1. inflection of два : ## genitive/prepositional ##...

Ancestry of “двух”, step by step

StepLanguageWordMeaning
1Russianдваtwo
2Old East Slavicдъваtwo
3Proto-Slavicdъvatwo
4Proto-Balto-Slavicduwōtwo
5Proto-Indo-Europeandwóh₁two
Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Balto-Slavic duwō →Every word from Proto-Slavic dъva →