Definition of tetrahedron in English:
tetrahedron
nounPlural tetrahedra, Plural tetrahedrons ˌtɛtrəˈhiːdrənˌtɛtrəˈhidrən
A solid having four plane triangular faces; a triangular pyramid.
四面体- Plato believed that atoms have the shapes of regular polyhedra: cubes, tetrahedrons, octahedrons, and so on.
- The new structure consists of 20 small crystalline tetrahedrons - pyramids with four triangular sides - that fit together a bit like sections of an orange.
- The four C-H bonds are directed towards the four corners of a tetrahedron, with carbon at its center and hydrogens at each vertex.
- With his geodesic dome, Fuller began to express a favorite geometric shape of his, the tetrahedron, and he put it everywhere he could.
- Whereas the tetrahedron is composed of four triangles, the pyramid, which looks a lot like it, is composed of four triangles and a square - the base.
- The robot is called ‘TETwalker’ for tetrahedral walker, because it resembles a tetrahedron.
- The tetrahedrite crystal on this specimen is a simple tetrahedron with very smooth, clean crystal faces and a bright, shiny metallic gray color (personal observation).
- The strongest and most stable molecular structure is the three-dimensional tetrahedron, the configuration achieved with silicates.
- In the methane molecule CH 4, for instance, the carbon atom is located at the center of a tetrahedron with the four hydrogen atoms located at the four apexes of the tetrahedron.
- In particular he identified the five elements, fire, earth, air, water and celestial matter with the five regular solids, the tetrahedron, cube, octahedron, icosahedron and the dodecahedron.
- These five remarkable solids - tetrahedron, cube, octahedron, dodecahedron, icosahedron - have faces that are congruent equilateral polygons.
- For example, the convex hull of a 3D molecule is a convex polytope rather than a polygon, and it is tessellated by tetrahedra rather than triangles.
- As water's temperature decreases to and falls below the normal freezing point, more and more of its molecules self-organize into clusters that have structures based on the tetrahedron, a pyramid with a triangular base.
- The silica tetrahedra may also form a sheet structure where three oxygen atoms of each tetrahedron are shared by adjacent tetrahedra.
- He examined a vectorial system of geometry, Energetic - Synergetic geometry, based on the tetrahedron which provides maximum strength with minimum structure.
- An artist can look at a mathematical shape and envision unlimited possibilities, even from a shape as seemingly simple as a tetrahedron, a trefoil knot, a Möbius strip, or a fractal surface.
- He assigned the tetrahedron to fire, because the tetrahedron is the regular solid with the sharpest angles, and because fire is the most penetrating of elements.
- Quartz crystals are silicon atoms surrounded by a tetrahedron of oxygen atoms linked at shared corners.
- The Enterprise Day at Joseph Rowntree School also involved representatives from The Institute Of Civil Engineers who built a giant tetrahedron with their young charges.
- When all four corners of the tetrahedra are shared, the mineral is called a tectosilicate.
Derivatives
tetrahedral
- By the 1880s Wislicenus was fully convinced of the tetrahedral carbon and promoted the design of experiments as a means of understanding the spatial arrangement of atoms in organic structures.
- For instance, if you assemble carbon atoms so that each one bonds to four others in a tetrahedral pattern, you end up with diamond.
- Carbon normally forms tetrahedral structures, with the bonds about 108° apart.
- In designing aircraft his use of tetrahedral structural elements inspired him to develop and patent a system of space frame architecture.
- Klee's mountains, pyramidal in form, might suggest to some the tetrahedral silicate structures of rock-forming minerals, but this connection may not have been in the mind of the artist.
adjective ˌtɛtrəˈhiːdrəlˌtɛtrəˈhidrəl
Origin
Late 16th century: from late Greek tetraedron, neuter (used as a noun) of tetraedros 'four-sided'.
Rhymes
decahedron, dodecahedron, octahedron, polyhedron
Definition of tetrahedron in US English:
tetrahedron
nounˌtɛtrəˈhidrənˌtetrəˈhēdrən
A solid having four plane triangular faces; a triangular pyramid.
四面体- As water's temperature decreases to and falls below the normal freezing point, more and more of its molecules self-organize into clusters that have structures based on the tetrahedron, a pyramid with a triangular base.
- Plato believed that atoms have the shapes of regular polyhedra: cubes, tetrahedrons, octahedrons, and so on.
- In the methane molecule CH 4, for instance, the carbon atom is located at the center of a tetrahedron with the four hydrogen atoms located at the four apexes of the tetrahedron.
- The four C-H bonds are directed towards the four corners of a tetrahedron, with carbon at its center and hydrogens at each vertex.
- Whereas the tetrahedron is composed of four triangles, the pyramid, which looks a lot like it, is composed of four triangles and a square - the base.
- For example, the convex hull of a 3D molecule is a convex polytope rather than a polygon, and it is tessellated by tetrahedra rather than triangles.
- The silica tetrahedra may also form a sheet structure where three oxygen atoms of each tetrahedron are shared by adjacent tetrahedra.
- These five remarkable solids - tetrahedron, cube, octahedron, dodecahedron, icosahedron - have faces that are congruent equilateral polygons.
- The new structure consists of 20 small crystalline tetrahedrons - pyramids with four triangular sides - that fit together a bit like sections of an orange.
- The strongest and most stable molecular structure is the three-dimensional tetrahedron, the configuration achieved with silicates.
- An artist can look at a mathematical shape and envision unlimited possibilities, even from a shape as seemingly simple as a tetrahedron, a trefoil knot, a Möbius strip, or a fractal surface.
- When all four corners of the tetrahedra are shared, the mineral is called a tectosilicate.
- The robot is called ‘TETwalker’ for tetrahedral walker, because it resembles a tetrahedron.
- The tetrahedrite crystal on this specimen is a simple tetrahedron with very smooth, clean crystal faces and a bright, shiny metallic gray color (personal observation).
- Quartz crystals are silicon atoms surrounded by a tetrahedron of oxygen atoms linked at shared corners.
- He assigned the tetrahedron to fire, because the tetrahedron is the regular solid with the sharpest angles, and because fire is the most penetrating of elements.
- With his geodesic dome, Fuller began to express a favorite geometric shape of his, the tetrahedron, and he put it everywhere he could.
- The Enterprise Day at Joseph Rowntree School also involved representatives from The Institute Of Civil Engineers who built a giant tetrahedron with their young charges.
- In particular he identified the five elements, fire, earth, air, water and celestial matter with the five regular solids, the tetrahedron, cube, octahedron, icosahedron and the dodecahedron.
- He examined a vectorial system of geometry, Energetic - Synergetic geometry, based on the tetrahedron which provides maximum strength with minimum structure.
Origin
Late 16th century: from late Greek tetraedron, neuter (used as a noun) of tetraedros ‘four-sided’.