Definition of pentahedron in English:

pentahedron

nounPlural pentahedrons, Plural pentahedra ˌpɛntəˈhiːdr(ə)nˌpɛn(t)əˈhidrən

A solid figure with five plane faces.
Example sentencesExamples
- Whereas the tetrahedron is composed of four triangles, the pyramid (or pentahedron), which looks a lot like it, is composed of four triangles and a square - the base.
- Then the pyramids are cut by silhouettes into a set of pentahedrons, which together constitute the centripetal pentahedron model of the visual hull.
- You can also have an Egyptian pentahedron square-base pyramid.

Derivatives

pentahedral

adjective

There are two topologically distinct pentahedral graphs which, through duality, correspond to the skeletons of the square pyramid and triangular dipyramid.
Example sentencesExamples
- I noticed that it was closely related to the pentahedral prism packing.

Origin

Late 18th century: from penta- 'five' + -hedron, on the pattern of words such as polyhedron.

Definition of pentahedron in US English:

pentahedron

nounˌpɛn(t)əˈhidrənˌpen(t)əˈhēdrən

A solid figure with five plane faces.
Example sentencesExamples
- Then the pyramids are cut by silhouettes into a set of pentahedrons, which together constitute the centripetal pentahedron model of the visual hull.
- You can also have an Egyptian pentahedron square-base pyramid.
- Whereas the tetrahedron is composed of four triangles, the pyramid (or pentahedron), which looks a lot like it, is composed of four triangles and a square - the base.

Origin

Late 18th century: from penta- ‘five’ + -hedron, on the pattern of words such as polyhedron.

单词	pentahedron
释义	Definition of pentahedron in English: pentahedron nounPlural pentahedrons, Plural pentahedra ˌpɛntəˈhiːdr(ə)nˌpɛn(t)əˈhidrən A solid figure with five plane faces. Example sentencesExamples Whereas the tetrahedron is composed of four triangles, the pyramid (or pentahedron), which looks a lot like it, is composed of four triangles and a square - the base. Then the pyramids are cut by silhouettes into a set of pentahedrons, which together constitute the centripetal pentahedron model of the visual hull. You can also have an Egyptian pentahedron square-base pyramid. Derivatives pentahedral adjective There are two topologically distinct pentahedral graphs which, through duality, correspond to the skeletons of the square pyramid and triangular dipyramid. Example sentencesExamples I noticed that it was closely related to the pentahedral prism packing. Origin Late 18th century: from penta- 'five' + -hedron, on the pattern of words such as polyhedron. Definition of pentahedron in US English: pentahedron nounˌpɛn(t)əˈhidrənˌpen(t)əˈhēdrən A solid figure with five plane faces. Example sentencesExamples Then the pyramids are cut by silhouettes into a set of pentahedrons, which together constitute the centripetal pentahedron model of the visual hull. You can also have an Egyptian pentahedron square-base pyramid. Whereas the tetrahedron is composed of four triangles, the pyramid (or pentahedron), which looks a lot like it, is composed of four triangles and a square - the base. Origin Late 18th century: from penta- ‘five’ + -hedron, on the pattern of words such as polyhedron.
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