{Regular icosahedron}, one of the five regular polyhedrons, bounded by twenty equilateral triangules. Five triangles meet to form each solid angle of the polyhedron. [1913 Webster]
The Collaborative International Dictionary of English. 2000.
regular icosahedron — noun an icosahedron with twenty equilateral triangles as faces • Hypernyms: ↑regular polyhedron, ↑regular convex solid, ↑regular convex polyhedron, ↑Platonic body, ↑Platonic solid, ↑ideal solid … Useful english dictionary
Icosahedron — I co*sa*he dron, n. [Gr. ?; ? twenty + ? seat, base, fr. ? to sit.] (Geom.) A solid bounded by twenty sides or faces. [1913 Webster] {Regular icosahedron}, one of the five regular polyhedrons, bounded by twenty equilateral triangules. Five… … The Collaborative International Dictionary of English
Icosahedron — In geometry, an icosahedron (Greek: eikosaedron , from eikosi twenty + hedron seat; IPA|/ˌaɪ.kəʊ.sə.ˈhi.dɹən/; plural: drons, dra IPA|/ dɹə/) isany polyhedron having 20 faces, but usually a regular icosahedron is implied, which has equilateral… … Wikipedia
Regular polyhedron — A regular polyhedron is a polyhedron whose faces are congruent (all alike) regular polygons which are assembled in the same way around each vertex. A regular polyhedron is highly symmetrical, being all of edge transitive, vertex transitive and… … Wikipedia
icosahedron — noun a polyhedron with twenty faces; the regular icosahedron has regular triangles as faces and is one of the Platonic solids. See Also: icosahedral, truncated icosahedron … Wiktionary
regular convex polyhedron — noun any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent • Syn: ↑regular polyhedron, ↑regular convex solid, ↑Platonic body, ↑Platonic solid, ↑ideal solid • Hypernyms: ↑polyhedron … Useful english dictionary
regular convex solid — noun any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent • Syn: ↑regular polyhedron, ↑regular convex polyhedron, ↑Platonic body, ↑Platonic solid, ↑ideal solid • Hypernyms: ↑polyhedron … Useful english dictionary
regular polyhedron — noun any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent • Syn: ↑regular convex solid, ↑regular convex polyhedron, ↑Platonic body, ↑Platonic solid, ↑ideal solid • Hypernyms: ↑polyhedron … Useful english dictionary
Regular — Reg u*lar ( l?r), a. [L. regularis, fr. regula a rule, fr. regere to guide, to rule: cf. F. r[ e]gulier. See {Rule}.] [1913 Webster] 1. Conformed to a rule; agreeable to an established rule, law, principle, or type, or to established customary… … The Collaborative International Dictionary of English
Regular polygon — Regular Reg u*lar ( l?r), a. [L. regularis, fr. regula a rule, fr. regere to guide, to rule: cf. F. r[ e]gulier. See {Rule}.] [1913 Webster] 1. Conformed to a rule; agreeable to an established rule, law, principle, or type, or to established… … The Collaborative International Dictionary of English
