sphenocorona

S1P3H4E1N1O1C3O1R1O1N1A1

noun

A polyhedron, one of the Johnson solids, whose faces are composed of 12 equilateral triangles and 2 squares.

Scrabble 19
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Meanings

noun
  1. geometryA polyhedron, one of the Johnson solids, whose faces are composed of 12 equilateral triangles and 2 squares.

Origin

Blend of sphenoid + corona or from spheno- + corona. Coined by Norman W. Johnson in 1969.

Full word history & related roots →
Cite this entry
APA

sphenocorona. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/sphenocorona

MLA

“sphenocorona.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sphenocorona. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “sphenocorona,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/sphenocorona.

Source: sphenocorona on Wiktionary, CC BY-SA 4.0.