rhombohedral

noun, plural rhom·bo·he·drons, rhom·bo·he·dra [rom-buh–hee-druh] /ˌrɒm bəˈhi drə/.

1. a solid bounded by six rhombic planes.

adjective

1. of or relating to a rhombohedron
2. crystallog another term for trigonal (def. 2)

noun

1. a six-sided prism whose sides are parallelograms

1. See trigonal.

Plural rhombohedrons rhombohedra

1. A prism with six faces, each a rhombus.