Definition of tetrahedron in English:

tetrahedron

nounPlural tetrahedra, Plural tetrahedrons ˌtɛtrəˈhiːdrənˌtɛtrəˈhidrən

A solid having four plane triangular faces; a triangular pyramid.
Example sentencesExamples
- 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

adjective ˌtɛtrəˈhiːdrəlˌtɛtrəˈhidrəl

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.
Example sentencesExamples
- 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.

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.
Example sentencesExamples
- 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’.

单词	tetrahedron
释义	Definition of tetrahedron in English: tetrahedron nounPlural tetrahedra, Plural tetrahedrons ˌtɛtrəˈhiːdrənˌtɛtrəˈhidrən A solid having four plane triangular faces; a triangular pyramid. Example sentencesExamples 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 adjective ˌtɛtrəˈhiːdrəlˌtɛtrəˈhidrəl 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. Example sentencesExamples 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. 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. Example sentencesExamples 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’.
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