[ rom-boid ]

  1. an oblique-angled parallelogram with only the opposite sides equal.

  2. Anatomy. rhomboideus.

  1. Also rhom·boi·dal. having a form like or similar to that of a rhombus; shaped like a rhomboid.

Origin of rhomboid

1560–70; <Late Latin rhomboīdes<Greek rhomboeidḕs (schêma) rhomboid (form, shape). See rhombus, -oid

Other words from rhomboid

  • rhom·boi·dal·ly, adverb
  • sub·rhom·boid, adjective
  • sub·rhom·boi·dal, adjective

Words Nearby rhomboid

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How to use rhomboid in a sentence

  • Lower leaves stalked, ovate or rhomboid, more or less toothed or angular, but entire at the base.

    Field and Woodland Plants | William S. Furneaux
  • A black shawl had enwrapped her shoulders, a green plaid skirt had made an irregular rhomboid from the saddle downwards.

    The Tower of Oblivion | Oliver Onions

British Dictionary definitions for rhomboid


/ (ˈrɒmbɔɪd) /

  1. a parallelogram having adjacent sides of unequal length

adjectiveAlso: rhom'boidal
  1. having such a shape

Origin of rhomboid

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

Scientific definitions for rhomboid


[ rŏmboid′ ]

  1. A parallelogram with unequal adjacent sides.

Other words from rhomboid

  • rhomboid, rhomboidal adjective

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.