# hebesphenomegacorona

> English word · Noun

## Definitions
1. A polyhedron, one of the Johnson solids, having 18 triangular and 3 square faces.

## Etymology
From hebe- + spheno- + mega- + corona. Compare sphenocorona, sphenomegacorona. Coined by Norman W. Johnson in 1969.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/hebesphenomegacorona