rhom·​bus | \ ˈräm-bəs How to pronounce rhombus (audio) \
plural rhombuses or rhombi\ ˈräm-​ˌbī How to pronounce rhombi (audio) , -​ˌbē \

Definition of rhombus

: a parallelogram with four equal sides and sometimes one with no right angles

Examples of rhombus in a Sentence

Recent Examples on the Web The building’s shape was then closer to a rhombus, according to Valentine. Yvette Orozco, Houston Chronicle, "Seabrook residents mourn impending doom of unique ‘Triangle Building’," 5 Sep. 2019 For more than a decade, Australian engineers working under the name Rotary Engine Development Agency have developed a new design of rotary engine that is based on a deforming rhombus rather than the conventional triangular rotors. Matthew Jancer, Popular Mechanics, "The Rhombus Rotary Engine: Can a Quirky New Design Top the Famous Wankel?," 18 Jan. 2019 Cait Carouge’s large color photographs, meanwhile, one orange, one rosy gray, one mostly black, are inhabited by slits, streaks and overlapping rhombuses that could almost pass for Photoshop abstraction. New York Times, "What to See in New York Art Galleries This Week," 27 June 2018 And our unrivaled program director, Sara Leeder, has fit every piece—every square, rhombus, and circle—seamlessly together. Clifton Leaf, Fortune, "FORTUNE Brainstorm Health’s 3rd Annual Conference Is Coming Soon!," 27 Feb. 2018 The board is sturdy, hexagonal in shape, and folds into a neat rhombus in the box. Erik Wecks, WIRED, "Review: Hex-A-Gon Is Great Fun," 16 Feb. 2012

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rhombus.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of rhombus

circa 1560, in the meaning defined above

History and Etymology for rhombus

Latin, from Greek rhombos piece of wood whirled on a string, lozenge, from rhembein to whirl

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Time Traveler for rhombus

Time Traveler

The first known use of rhombus was circa 1560

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Cite this Entry

“Rhombus.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/rhombus. Accessed 12 December 2019.

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More Definitions for rhombus


How to pronounce rhombus (audio)

English Language Learners Definition of rhombus

geometry : a shape with four sides that are equal in length and with four angles that are not always right angles


rhom·​bus | \ ˈräm-bəs How to pronounce rhombus (audio) \

Kids Definition of rhombus

: a parallelogram whose sides are equal in length

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More from Merriam-Webster on rhombus

Rhyming Dictionary: Words that rhyme with rhombus

Spanish Central: Translation of rhombus

Nglish: Translation of rhombus for Spanish Speakers

Comments on rhombus

What made you want to look up rhombus? Please tell us where you read or heard it (including the quote, if possible).


a period of high artistic development

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