Where does “bilunabirotunda” come from?

bilunabirotunda (English) comes from English Luna, from Middle English lune, from Old French lune, from Latin lūna, from Old Latin losna, from Proto-Italic louksnā, from Proto-Indo-European lówksneh₂, from Proto-Indo-European lewḱ- — bright; to shine; to see.

bilunabirotunda (English): A polyhedron, one of the Johnson solids, having 8 triangular, 2 square, and 4 pentagonal faces

Definitions

  1. A polyhedron, one of the Johnson solids, having 8 triangular, 2 square, and 4 pentagonal faces

Ancestry of “bilunabirotunda”, step by step

bilunabirotunda traces back through two separate lines of ancestry.

via English Luna

StepLanguageWordMeaning
1EnglishLunasilver in alchemy
2Middle EnglishluneThe celestial body closest to the Earth,...
3Old Frenchlunethe Moon
4Latinlūna
5Old Latinlosna
6Proto-Italiclouksnāmoon
7Proto-Indo-Europeanlówksneh₂moon
8Proto-Indo-Europeanlewḱ-lynx
9Proto-Indo-Europeanlewk-bright; to shine; to see

via English rotunda

StepLanguageWordMeaning
1Englishrotundaa round building, usually small, often with a...
2LatinRotunda
Every word from Proto-Indo-European lewk-