Icosahedron
Icosahedron , noun
[Greek {not transcribed}; {not transcribed} twenty + {not transcribed} seat, base, from {not transcribed} to sit.]
(Geometry) A solid bounded by twenty sides or faces.
Collocations (1)
Regular icosahedron , one of the five regular polyhedrons, bounded by twenty equilateral triangules. Five triangles meet to form each solid angle of the polyhedron.