pen·​tag·​o·​nal | \ pen-ˈta-gə-nᵊl How to pronounce pentagonal (audio) \

Definition of pentagonal

1 : having five sides and five angles
2 : having a pentagon as a cross section or as a base a pentagonal pyramid

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Other Words from pentagonal

pentagonally \ pen-​ˈta-​gə-​nᵊl-​ē How to pronounce pentagonal (audio) \ adverb

Examples of pentagonal in a Sentence

Recent Examples on the Web The result is a cluster of pentagonal buildings with angles designed to deflect wind. David Nikel, Forbes, 10 Apr. 2021 From its unique double headlights and gigantic pentagonal grille to its slippery bodywork and sloping roofline, the all-new 2021 Genesis G80 is a rolling beauty. Eric Stafford, Car and Driver, 19 Feb. 2021 For example, a soccer ball has 20 white hexagonal and 12 black pentagonal patches for a total of 32 faces, as well as 90 edges and 60 vertices., 26 Jan. 2021 Kites and darts form the basic units of another kind of Penrose tiling for which Conway proved many interesting theorems about their uncountability, pentagonal symmetry and their other connections to the golden ratio. Quanta Magazine, 20 Nov. 2020 Its pentagonal grille shape is familiar from elsewhere in the Acura lineup, and the MDX's proportions look sharper and more athletic compared with the current model. Joey Capparella, Car and Driver, 1 Oct. 2020 Therrien says the discovery came in a failed attempt to synthesize pentagraphene, a sheet of carbon atoms bound in pentagonal rings that has been predicted but never created. W. Wayt Gibbs, Science | AAAS, 12 Nov. 2019 Just before 8 pm on February 9, 2018, high in the northeastern mountains of South Korea, Sang-jin Oh was sitting on a plastic chair a few dozen rows up from the floor of Pyeongchang's vast, pentagonal Olympic Stadium. Andy Greenberg Excerpt, Wired, 17 Oct. 2019 The proteins of the human papilloma viruses, for instance, were arranged in five-fold pentagonal structures, rather than hexagonal ones. Quanta Magazine, 19 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pentagonal.' 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 pentagonal

1571, in the meaning defined at sense 1

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Time Traveler for pentagonal

Time Traveler

The first known use of pentagonal was in 1571

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Statistics for pentagonal

Last Updated

24 Apr 2021

Cite this Entry

“Pentagonal.” Dictionary, Merriam-Webster, Accessed 13 Jun. 2021.

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More from Merriam-Webster on pentagonal

Nglish: Translation of pentagonal for Spanish Speakers


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