Look up: tetrahedron

1. tetrahedron
   [n] - any polyhedron having four plane faces
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. tetrahedron
   a device,normally found at uncontrolled airports,used as a landing direction indicator Category: Transport
   Found on http://www.mijnwoordenboek.nl/definition
   
   
3. 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
   
   
4. 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
   
   
5. tetrahedron
   noun any polyhedron having four plane faces
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
6. Tetrahedron
   • (n.) A solid figure inclosed or bounded by four triangles.
   Found on http://thinkexist.com/dictionary/meaning
   
   
7. 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
   
   
8. 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
   
   
9. tetrahedron
   tetrahedron: see polyhedron.
   Found on http://www.infoplease.com/ce6/sci/A09194
   
   
10. Tetrahedron
    A tetrahedron is a geometric solid figure with four triangular faces.
    Found on http://www.probertencyclopaedia.com/brow
    
    
11. 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
    
    
12. 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
    
    
13. Tetrahedron
    In geometry, a `tetrahedron` (plural: `tetrahedra`) is a polyhedron composed of four triangular faces, three of which meet at each vertex. A `regular tetrahedron` is one in which the four triangles are regular, or "equilateral", and is one of the Platonic solids. The tetrahedron is the onl...
    Found on http://en.wikipedia.org/wiki/Tetrahedron
    
    
14. 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 o...
    Found on http://en.wikipedia.org/wiki/Tetrahedron