Rhombohedral
Rhombohedral Rhom`bo*he"dral, a. (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. [1913 Webster]

{Rhombohedral iron ore} (Min.) See {Hematite}.

{Rhombohedral system} (Crystallog.), a division of the hexagonal system embracing the rhombohedron, scalenohedron, etc. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • rhombohedral — [räm΄bə hē′drəl] adj. 1. of or having to do with a rhombohedron 2. designating or of a crystal system having three axes of equal length, none of which intersects at right angles with another: see CRYSTAL SYSTEM * * * See rhombohedron. * * * …   Universalium

  • rhombohedral — [räm΄bə hē′drəl] adj. 1. of or having to do with a rhombohedron 2. designating or of a crystal system having three axes of equal length, none of which intersects at right angles with another: see CRYSTAL SYSTEM …   English World dictionary

  • rhombohedral — adjective see rhombohedron …   New Collegiate Dictionary

  • rhombohedral — adjective Having three equal axes and oblique angles …   Wiktionary

  • rhombohedral — rhom·bo·he·dral …   English syllables

  • rhombohedral — adjective having threefold symmetry • Syn: ↑trigonal • Similar to: ↑symmetrical, ↑symmetric • Derivationally related forms: ↑rhombohedron • Topics: ↑ …   Useful english dictionary

  • Rhombohedral iron ore — Rhombohedral Rhom bo*he dral, a. (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. [1913… …   The Collaborative International Dictionary of English

  • Rhombohedral system — Rhombohedral Rhom bo*he dral, a. (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. [1913… …   The Collaborative International Dictionary of English

  • Rhombohedral crystal system — In crystallography, the rhombohedral (or trigonal) crystal system is one of the seven lattice point groups, named after the two dimensional rhombus. A crystal system is described by three basis vectors. In the rhombohedral system, the crystal is… …   Wikipedia

  • rhombohedral iron ore — Hematite Hem a*tite, n. [L. haematites, Gr. ? bloodlike, fr. a i^ma, a i matos, blood.] (Min.) An important ore of iron, the sesquioxide, so called because of the red color of the powder. It occurs in splendent rhombohedral crystals, and in… …   The Collaborative International Dictionary of English

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