Definition of rhombohedron in English:


Line breaks: rhombo|he¦dron
Pronunciation: /ˌrɒmbə(ʊ)ˈhiːdr(ə)n
, -ˈhɛd-/

noun (plural rhombohedra /-drə/ or rhombohedrons)

  • 1A solid figure whose faces are six equal rhombuses.
  • 1.1A rhombohedral crystal or other solid object.
    More 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’.


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

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