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rhombohedron

Syllabification: rhom·bo·he·dron
Pronunciation: /ˌrämbōˈhēdrən
 
/

Definition of rhombohedron in English:

noun (plural rhombohedrons or rhombohedra /-drə/)

1A solid figure whose faces are six equal rhombuses.
1.1A crystal or other solid object shaped like a rhombohedron.
Example sentences
  • He arrived at this from a study of calcite crystals of various habits and noted that the cleavage rhombohedra were always the same.
  • This Eagle mine is well known for dark spruce-green, rough-surfaced octahedra of fluorite associated with rhombohedra of rhodochrosite to 0.75 inch on edge.
  • These are nearly always accompanied by parallel overgrowth of several flattened rhombohedra aligned along each scalenohedron's c-axis, forming ‘pagodas’.

Origin

mid 19th century: from rhombus + -hedron, on the pattern of words such as polyhedron.

Definition of rhombohedron in:

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