disphenoid

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English[edit]

Adjective[edit]

disphenoid (not comparable)

  1. (mineralogy) Describing a wedge-shaped crystal form of the tetragonal or orthorhombic system.
  2. (mineralogy) Describing a crystal form bounded by eight scalene triangles arranged in pairs, constituting a tetragonal scalenohedron.

Noun[edit]

disphenoid (plural disphenoids)

  1. (geometry) A polyhedron whose four faces are identical isosceles or scalene triangles.