tetrahedron
pronunciation
How to pronounce tetrahedron in British English:
UK [ˌtetrəˈhiːdrən]
How to pronounce tetrahedron in American English:
US [ˌtetrəˈhiːdrən]
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- Noun:
- any polyhedron having four plane faces
Word Origin
- tetrahedron (n.)
- "triangular pyramid, solid figure contained by four triangular surfaces," 1560s, from Late Greek tetraedron, noun use of neuter of tetraedros (adj.) "four-sided," from tetra- "four" (see tetra-) + hedra "seat, base, chair, face of a geometric solid," from PIE root *sed- (1) "to sit" (see sedentary). Related: Tetrahedral.
Example
- 1. This is the top view of an oxygen-silicon tetrahedron .
- 2. In this so-called " fire tetrahedron " , heat breaks the chemical bonds of the fuel 's hydrocarbon chains .
- 3. Tetrahedron was our first complex message to you in 1991 .
- 4. A tetrahedron with four equilateral triangular faces .
- 5. Tetrahedron a three-dimensional solid , a polyhedron , in which all four faces are equilateral triangles .