Where does “восемнадцатиугольник” come from?

восемнадцатиугольник (Russian) comes from Russian восемна́дцать, from Russian восемь, from Old Church Slavonic осмь, from Proto-Slavic osmь, from Proto-Balto-Slavic aśmas, from Proto-Indo-European oḱtṓwos, from Proto-Indo-European oḱtṓw, from Proto-Indo-European aḱ- — sharp, pointed; sharp, pointed, edgy; sharp,...

восемнадцатиугольник (Russian): octadecagon

Definitions

  1. octadecagon

Ancestry of “восемнадцатиугольник”, step by step

восемнадцатиугольник traces back through two separate lines of ancestry.

via Russian восемна́дцать

StepLanguageWordMeaning
1Russianвосемна́дцатьeighteen (18)
2Russianвосемьeight
3Old Church Slavonicосмьeight
4Proto-Slavicosmьeight
5Proto-Balto-Slavicaśmas
6Proto-Indo-Europeanoḱtṓwoseighth
7Proto-Indo-Europeanoḱtṓweight
8Proto-Indo-Europeanaḱ-sharp, pointed; sharp, pointed, edgy; sharp,...

via Russian у́гол

StepLanguageWordMeaning
1Russianу́голangle; corner
2Proto-Slavicǫgъlъcorner, angle
3Proto-Balto-Slavic*ángulas
4Proto-Indo-Europeanh₂engulosjoint?
5Proto-Indo-Europeanh₂eng-curve, bend
Every word from Proto-Indo-European aḱ-Every word from Proto-Indo-European oḱtṓwEvery word from Proto-Indo-European oḱtṓwos
восемнадцатиугольник — Etymology, Origin & Word History | Etymology Explorer