- Pyritohedron
- Pyritohedron Pyr`i*to*he"dron, n. [Pyrite + Gr. ? base.] (Crystallog.) The pentagonal dodecahedron, a common form of pyrite. [1913 Webster]
The Collaborative International Dictionary of English. 2000.
Pyritohedron
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Pyritohedron — the other one being cubical.A regular dodecahedron can be formed from a cube in the following way: The top square in the cube is replaced by a roof composed of two pentagons, joined along the top of the roof. The diagonals in the pentagons… … Wikipedia
pyritohedron — pentagoninis dodekaedras statusas T sritis fizika atitikmenys: angl. pentadodecahedron; pentagonal dodecahedron; pyritohedron vok. Pentagondodekaeder, n; Pyritoeder, n rus. пентагональный додекаэдр, m; пентагондодекаэдр, m pranc. dodécaèdre… … Fizikos terminų žodynas
pyritohedron — pyritohedral, adj. /puy ruy teuh hee dreuhn, peuh , puy ruy /, n. Crystall. a crystal form of 12 pentagonal faces. Also called pentagonal dodecahedron. See diag. under dodecahedron. [1865 70; pyrito (comb. form of PYRITE) + HEDRON] * * * … Universalium
pyritohedron — noun a) an irregular dodecahedron, consisting of identical but irregular pentagons b) the shape of a crystal of pyrite … Wiktionary
pyritohedron — py·ri·to·he·dron … English syllables
pyritohedron — drən sometimes ˌdrän noun (plural pyritohedrons or pyritohedra) Etymology: New Latin, from pyrito (from International Scientific Vocabulary … Useful english dictionary
Dodecahedron — Regular Dodecahedron (Click here for rotating model) Type Platonic solid Elements F = 12, E = 30 V = 20 (χ = 2) Faces by sides 12{5} … Wikipedia
Platonic solid — In geometry, a Platonic solid is a convex polyhedron that is regular, in the sense of a regular polygon. Specifically, the faces of a Platonic solid are congruent regular polygons, with the same number of faces meeting at each vertex; thus, all… … 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
Dodecahedron — Do*dec a*he dron, n. [Gr. ?; ? twelve + ? seat, bottom, base: cf. F. dod[ e]ca[ e]dre.] (Geom. & Crystallog.) A solid having twelve faces. [1913 Webster] Note: The regular dodecahedron is bounded by twelve equal and regular pentagons; the… … The Collaborative International Dictionary of English
