rhombohedral Meaning, Definition & Usage
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adjective satellite having threefold symmetry
trigonal.
WordNet
Rhom`bo*he"dral adjective
Definitions
(Geom. & Crystallog.) 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.