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tetrahedron
 tetrahedrontet·ra·he·dron T0132000 (tĕt′rə-hē′drən)n. pl. tet·ra·he·drons or tet·ra·he·dra (-drə) A polyhedron with four faces.
[Greek tetraedron, from neuter of tetraedros, four-faced : tetra-, tetra- + -hedros, sided; see -hedron.]tetrahedron (ˌtɛtrəˈhiːdrən) n, pl -drons or -dra (-drə) 1. (Mathematics) a solid figure having four plane faces. A regular tetrahedron has faces that are equilateral triangles. See also polyhedron2. (Mathematics) any object shaped like a tetrahedron[C16: from New Latin, from Late Greek tetraedron; see tetra-, -hedron] ˌtetraˈhedral adj ˌtetraˈhedrally advtet•ra•he•dron (ˌtɛ trəˈhi drən)
n., pl. -drons, -dra (-drə). 1. a solid contained by four plane faces; a triangular pyramid. 2. any of various objects resembling a tetrahedron. [1560–70; < Late Greek tetráedron] tet·ra·he·dron (tĕt′rə-hē′drən) A three-dimensional geometric figure with four triangular faces.Thesaurus| Noun | 1. |  tetrahedron - any polyhedron having four plane facespolyhedron - a solid figure bounded by plane polygons or faces |
Translationstetrahedron
tetrahedron: see polyhedronpolyhedron
, closed solid bounded by plane faces; each face of a polyhedron is a polygon. A cube is a polyhedron bounded by six polygons (in this case squares) meeting at right angles.
..... Click the link for more information. .TetrahedronA polygon with four plane surfaces.Tetrahedron (or triangular pyramid), a polyhedron with four triangular faces, six edges, and four vertices. At each vertex three edges intersect. The regular tetrahedron (Figure 1) is one  Figure 1
of the five regular polyhedrons. If a is the length of an edge of a regular tetrahedron, the volume of the tetrahedron is  . tetrahedron[‚te·trə′hē·drən] (crystallography) An isometric crystal form in cubic crystals, in the shape of a four-faced polyhedron, each face of which is a triangle. (mathematics) A four-sided polyhedron. tetrahedron A device to indicate wind direction, and, in turn, landing direction. It is tetrahedronshaped—four triangular sides. This device is generally located at uncontrolled airports. The small end of a tetrahedron points in the direction of landing. At controlled airports, the tetrahedron should be disregarded because tower instructions supercede the indicator. On approach charts, a tetrahedron is shown as.tetrahedron1. a solid figure having four plane faces. A regular tetrahedron has faces that are equilateral triangles 2. any object shaped like a tetrahedron tetrahedron
Words related to tetrahedronnoun any polyhedron having four plane facesRelated Words |