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rhomboid

[rom-boid] /ˈrɒm bɔɪd/
noun
1.
an oblique-angled parallelogram with only the opposite sides equal.
2.
Anatomy, rhomboideus.
adjective
3.
Also, rhomboidal. having a form like or similar to that of a rhombus; shaped like a rhomboid.
Origin
1560-1570
1560-70; < Late Latin rhomboīdes < Greek rhomboeidḕs (schêma) rhomboid (form, shape). See rhombus, -oid
Related forms
rhomboidally, adverb
subrhomboid, adjective
subrhomboidal, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for rhomboidal

rhomboid

/ˈrɒmbɔɪd/
noun
1.
a parallelogram having adjacent sides of unequal length
adjective
2.
having such a shape
Word Origin
C16: from Late Latin rhomboides, from Greek rhomboeidēs shaped like a rhombus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for rhomboidal

rhomboid

n.

1560s, from Middle French rhomboide or directly from Late Latin rhomboides, from Greek rhomboeides "rhomboidal; a rhomboid;" see rhombus + -oid. Related: Rhomboidal. As an adjective from 1690s.

Online Etymology Dictionary, © 2010 Douglas Harper
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rhomboidal in Medicine

rhomboid rhom·boid (rŏm'boid') or rhom·boi·dal (rŏm-boid'l)
adj.
Resembling a parallelogram having unequal adjacent sides.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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rhomboidal in Science
rhomboid
  (rŏm'boid')   
A parallelogram with unequal adjacent sides.

rhomboid, rhomboidal adjective
rhombus
  (rŏm'bəs)   
Plural rhombuses or rhombi (rŏm'bī)
A parallelogram with four equal sides; an equilateral parallelogram.

rhomboid, rhomboidal adjective
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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