Definition of heptahedron in English:


Syllabification: hep·ta·he·dron
Pronunciation: /heptəhēdrən

noun (plural heptahedrons or heptahedra /-ˈhēdrə/)

  • A solid figure with seven plane faces.
    More example sentences
    • Around the circle - in which the heptahedron lies - another seven-fold star can be constructed.
    • Edges vanish, and it becomes a heptahedron, having three rhombic faces and four triangular faces.
    • While all of the faces are regular and vertices equivalent, the heptahedron is self-intersecting and is therefore not considered an Archimedean solid.



Pronunciation: /-ˈhēdrəl/


late 17th century: from hepta- 'seven' + -hedron, on the pattern of words such as polyhedron.

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