Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- adjective Of or relating to a rhombohedron.
- adjective Mineralogy Of or relating to a crystal having three axes of equal length intersecting at oblique angles.
from The Century Dictionary.
- In geometry, of or pertaining to a rhombohedron; having forms derived from the rhombohedron.
- In crystallography, relating to a system of forms of which the rhombohedron is taken as the type. They are embraced in the rhombohedral division of the hexagonal system. See
hexagonal .
from the GNU version of the Collaborative International Dictionary of English.
- adjective (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.
- adjective (Min.) See
Hematite . - adjective (Crystallog.) a division of the hexagonal system embracing the rhombohedron, scalenohedron, etc.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective crystallography Having three
equal axes andoblique angles .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adjective having threefold symmetry
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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Naturally occurring graphites are reported to contain as much as 30% of the rhombohedral (beta) form, whereas synthetic materials contain only the alpha form.
Carbon 2008
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True, in the august presence of rhombohedral crystals, retinasphaltic resins, gehlenites, Fassaites, molybdenites, tungstates of manganese, and titanite of zirconium, why, the most facile of tongues may make a slip now and then.
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One part decorated with delicate blue and green stripes ended abruptly where a massive red rhombohedral growth pro'truded from the monstrosity's back.
Sentenced To Prism Foster, Alan Dean, 1946- 1985
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This insulin hexamer corresponds with the unit cell in the rhombohedral crystals first investigated and is the asymmetric unit in the monoclinic form which appears in the presence of phenol.
Nobel Lecture The X-Ray Analysis Of Complicated Molecules 1964
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Hot or dilute cold solutions deposit minute orthorhombic crystals of aragonite, cold saturated or moderately strong solutions, hexagonal (rhombohedral) crystals of calcite.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" Various
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It is rhombohedral in crystallization and isomorphous with calcite and chalybite.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" Various
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Shapes rhomboidal, perchance rhombohedral -- who knows?
Punch, or the London Charivari, Vol. 146, February 25, 1914 Various
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The crystals measure up to a yard across, and are rhombohedral or scalenohedral in habit; their faces are usually dull and corroded or coated with stilbite.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" Various
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There are two forms occurring there, the most abundant of which is the rhombohedral, after Fig. 3.
Scientific American Supplement, No. 344, August 5, 1882 Various
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As in the other rhombohedral carbonates, the crystals possess perfect cleavages parallel to the faces of the rhombohedron.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" Various
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