hemi-icosahedron

English

Alternative forms

• hemicosahedron

Etymology

hemi- +‎ icosahedron, referring to the fact that it contains half the faces of a regular icosahedron.

Noun

hemi-icosahedron (plural hemi-icosahedra or hemi-icosahedrons)

1. A polyhedron containing 10 triangular faces, 15 edges, and 6 vertices.