rhombohedron

[ rom-buh-hee-druhn ]

noun

, plural rhom·bo·he·drons, rhom·bo·he·dra [rom-b, uh, -, hee, -dr, uh].

1. a solid bounded by six rhombic planes.

rhombohedron

/ ˌrɒmbəʊˈhiːdrən /

noun

1. a six-sided prism whose sides are parallelograms

rhombohedron

/ rŏm′bō-hē′drən /

, Plural rhombohedrons

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

Other Words From

• rhombo·hedral adjective

Word History and Origins

Origin of rhombohedron¹

1830–40; < Greek rhómbo ( s ) rhombus + -hedron

Word History and Origins

Origin of rhombohedron¹

C19: from rhombus + -hedron

Example Sentences

The secondary twin-lamination, parallel to the obtuse rhombohedron e , so common in calcite, does not exist in dolomite.

From Project Gutenberg

Calcite cleaves in three directions parallel to the faces of the primitive rhombohedron.

From Project Gutenberg

This plane, which truncates the edge of the rhombohedron and has the indices , is called a “glide-plane.”

From Project Gutenberg

As in the other rhombohedral carbonates, the crystals possess perfect cleavages parallel to the faces of the rhombohedron.

From Project Gutenberg