Look up: tetrahedron

1. Tetrahedron
   [journal] Tetrahedron is a scientific journal publishing full original research papers in the field of organic chemistry. The impact factor of this journal is 2.817 (2007). It has published a number of highly cited papers, seven of which having >1000 citation each (according to Web of Scienc...
   Found on http://en.wikipedia.org/wiki/Tetrahedron
   
   
2. tetrahedron
   [n] - any polyhedron having four plane faces
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. tetrahedron
   a device,normally found at uncontrolled airports,used as a landing direction indicator Category: Transport
   Found on http://www.mijnwoordenboek.nl/definition
   
   
4. Tetrahedron
   Tet`ra·he'dron noun [ Tetra- + Greek ... seat, base, from ... to sit.] (Geom.) A solid figure inclosed or bounded by four triangles. » In crystallography, the regular tetrahedron is regarded as the hemihedral form of the regular octah...
   Found on http://www.encyclo.co.uk/webster/T/34
   
   
5. tetrahedron
   <geometry> A solid figure inclosed or bounded by four triangles. ... In crystallography, the regular tetrahedron is regarded as the hemihedral form of the regular octahedron. ... <geometry> Regular tetrahedron, a solid bounded by four equal equilateral triangles; one of the five regular ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
6. tetrahedron
   noun any polyhedron having four plane faces
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
7. Tetrahedron
   • (n.) A solid figure inclosed or bounded by four triangles.
   Found on http://thinkexist.com/dictionary/meaning
   
   
8. tetrahedron
   (from the article `clay mineral`) ...by various scientists including Charles Mauguin, Linus C. Pauling, W.W. Jackson, J. West, and John W. Gruner through the late 1920s to mid-1930s. ... ...lattices of organic compounds and of metals, Fuller developed a vectorial system of geometry that he called `Energetic-Synergetic geometry....
   Found on http://www.britannica.com/eb/a-z/t/30
   
   
9. Tetrahedron
   In geometry, a tetrahedron (plural: tetrahedra) is a polyhedron composed of four triangular faces, three of which meet at each vertex. It has six edges and four vertices. The tetrahedron is the only convex polyhedron that has four faces. The tetrahedron is the three-dimensional case of the more gen...
   Found on http://en.wikipedia.org/wiki/Tetrahedron
   
   
10. Tetrahedron
    Silicon atom joined by four oxygen atoms (SiO₄). The atomic properties of this molecule cause it to develop a unique three dimensional crystal lattice that is pyramid shaped.
    Found on http://www.physicalgeography.net/physgeo
    
    
11. tetrahedron
    A four-sided polyhedron. A regular tetrahedron, one of the Platonic solids, is a regular three-sided pyramid in which the base-edges and side-edges are of equal length. The projection of a regular tetrahedron can be an equilateral triangle or a square. The centers of the faces of a tetrahedron form ...
    Found on http://www.daviddarling.info/encyclopedi
    
    
12. tetrahedron
    tetrahedron: see polyhedron.
    Found on http://www.infoplease.com/ce6/sci/A09194
    
    
13. Tetrahedron
    A tetrahedron is a geometric solid figure with four triangular faces.
    Found on http://www.probertencyclopaedia.com/brow
    
    
14. tetrahedron
    In geometry, a solid figure (polyhedron) with four triangular faces; that is, a pyramid on a triangular base. A regular tetrahedron has equilateral triangles as its faces. The volume (V) of a tetrahedron is given by V = 1/3Bh where ...
    Found on http://www.talktalk.co.uk/reference/ency
    
    
15. TETRAHEDRON
    Ground-based, free-rotating, triangular-shaped wind direction indicator, generally placed near a runway, often lighted at major airports.
    Found on http://www.aerofiles.com/glossary.html