Where does “двадцятигранник” come from?

двадцятигранник (Ukrainian) comes from Ukrainian грань, from Old East Slavic грань, from Proto-Slavic granь, from Proto-Slavic -nь — Deverbative, creates nouns.

двадцятигранник (Ukrainian): icosahedron

Definitions

  1. icosahedron

Ancestry of “двадцятигранник”, step by step

StepLanguageWordMeaning
1Ukrainianграньfacet, side, basil
2Old East Slavicгрань—
3Proto-Slavicgranьside, edge
4Proto-Slavic-nьDeverbative, creates nouns
Every word from Proto-Slavic -nь →Every word from Proto-Slavic granь →Every word from Old East Slavic грань →
двадцятигранник — Etymology, Origin & Word History | Etymology Explorer