Meanings
nounhemi-icosahedron (plural hemi-icosahedra or hemi-icosahedrons)
plural hemi-icosahedra · plural hemi-icosahedrons · alternative hemicosahedron
- A polyhedron containing 10 triangular faces, 15 edges, and 6 vertices.
Origin
From hemi- + icosahedron, referring to the fact that it contains half the faces of a regular icosahedron.
Full word history & related roots →Cite this entry
APA
hemi-icosahedron. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/hemi-icosahedron
MLA
“hemi-icosahedron.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/hemi-icosahedron. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “hemi-icosahedron,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/hemi-icosahedron.
Source: hemi-icosahedron on Wiktionary, CC BY-SA 4.0.