RHOMBOHEDRAL

rhombohedral, trigonal

(adjective) having threefold symmetry

Source: WordNet® 3.1

Etymology

Adjective

rhombohedral (not comparable)

(crystallography) Having three equal axes and oblique angles.

Synonyms

• rhombohedric

Source: Wiktionary

Rhom`bo*he"dral, a. (Geom. & Crystallog.)

Definition: Related to the rhombohedron; presenting the form of a rhombohedron, or a form derivable from a rhombohedron; relating to a system of forms including the rhombohedron and scalenohedron. Rhombohedral iron ore (Min.) See Hematite.

– Rhombohedral system (Crystallog.), a division of the hexagonal system embracing the rhombohedron, scalenohedron, etc.

Source: Webster’s Unabridged Dictionary 1913 Edition

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