pentagon

noun (1)
pen·​ta·​gon | \ˈpen-tə-ˌgän \

Definition of pentagon 

(Entry 1 of 2)

: a polygon of five angles and five sides

Pentagon

noun (2)

Definition of Pentagon (Entry 2 of 2)

: the U.S. military leadership

Examples of pentagon in a Sentence

Noun (1)

The general attended a meeting at the Pentagon. There was disagreement between the President and the Pentagon over the new military budget.

Recent Examples on the Web: Noun

The sets on sale comes with colorful squares, triangles, and pentagons that can be pieced together to build 2-D or 3-D patterns. Lindsey Murray, Good Housekeeping, "Those Super-Expensive Magformers Are 50% Off on Amazon Right Now," 9 Aug. 2018 Joining me for insight and analysis are NBC News national political reporter Carol Lee, New York Times pentagon correspondent Helene Cooper, Republican strategist Al Cardenas and New York Times columnist Bret Stephens. NBC News, "Meet the Press - June 17, 2018," 17 June 2018 Sides denote privilege, with hexagons trumping pentagons, for instance. John J. Miller, WSJ, "A Multidimensional Religious Story," 8 June 2018 The black and white pentagon panels of that product, the Telstar Elust, became synonymous with the sport. Kevin Baxter, latimes.com, "A closer look at the technology inside the 2018 World Cup soccer ball," 21 May 2018 In the 1970s, Marjorie Rice, a homemaker with no mathematical background, ran across a Scientific American column about pentagons that tile the plane. Evelyn Lamb, WIRED, "An Anti-Aging Pundit Solves a Decades-Old Math Problem," 30 Apr. 2018 Kind of a pentagon or home plate, with straight sides, a meandering river boundary below, and a partly straight top with a friendly bite mark out of it on the northeast side from Lake Erie. Andrew J. Tobias, cleveland.com, "Parody Twitter accounts are increasingly a semi-official part of political campaigns," 27 Feb. 2018 Kind of a pentagon or home plate, with straight sides, a meandering river boundary below, and a partly straight top with a friendly bite mark out of it on the northeast side from Lake Erie. Andrew J. Tobias, cleveland.com, "Parody Twitter accounts are increasingly a semi-official part of political campaigns," 27 Feb. 2018 Kind of a pentagon or home plate, with straight sides, a meandering river boundary below, and a partly straight top with a friendly bite mark out of it on the northeast side from Lake Erie. Andrew J. Tobias, cleveland.com, "Parody Twitter accounts are increasingly a semi-official part of political campaigns," 27 Feb. 2018

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

Noun (1)

1570, in the meaning defined above

Noun (2)

1945, in the meaning defined above

History and Etymology for pentagon

Noun (1)

Greek pentagōnon, from neuter of pentagōnos pentagonal, from penta- + gōnia angle — more at -gon

Noun (2)

the Pentagon building, headquarters of the Department of Defense

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Statistics for pentagon

Last Updated

17 Nov 2018

Look-up Popularity

Time Traveler for pentagon

The first known use of pentagon was in 1570

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More Definitions for pentagon

pentagon

noun

English Language Learners Definition of pentagon

mathematics : a flat shape that has five sides and five corners

the Pentagon : the building in Washington, D.C., that is the headquarters of the U.S. Department of Defense

: the leaders of the U.S. military

pentagon

noun
pen·​ta·​gon | \ˈpen-tə-ˌgän \

Kids Definition of pentagon

: a flat geometric figure having five angles and five sides

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More from Merriam-Webster on pentagon

Rhyming Dictionary: Words that rhyme with pentagon

Spanish Central: Translation of pentagon

Nglish: Translation of pentagon for Spanish Speakers

Britannica English: Translation of pentagon for Arabic Speakers

Britannica.com: Encyclopedia article about pentagon

Comments on pentagon

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