icosahedron
Definition from Wiktionary, the free dictionary
Contents |
English [edit]
Alternative forms [edit]
- eicosaedrum (obsolete)
- icosaedrum (obsolete)
Etymology [edit]
From Ancient Greek εἰκοσάεδρον, from εἴκοσι (“twenty”) + ἕδρα (hedra, “face of a geometrical solid”).
Noun [edit]
icosahedron (plural icosahedra or icosahedrons)
- (geometry) A polyhedron with twenty faces.
- (geometry, specifically) A regular icosahedron: one of the Platonic solids, all of whose faces are regular triangles
Translations [edit]
a polyhedron
