bilunabirotunda

English

Etymology

From bi- +‎ luna +‎ bi- +‎ rotunda. Coined by Norman W. Johnson in 1969.

Noun

bilunabirotunda

  1. (mathematics) A polyhedron, one of the Johnson solids, having 8 triangular, 2 square, and 4 pentagonal faces.
    • 2025, Ajit S. Narang, ‎Sherif I.F. Badawy, Handbook of Pharmaceutical Wet Granulation: Theory and Practice in a Quality by Design Paradigm‎[1], page 786:
      ...and investigated the effects of different particle shapes, including sphere, cube, bilunabirotunda, and hexagonal prism.

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Further reading

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