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
When placed on a plate heated to about 200 degrees Celsius, the flat sheet measuring about 4 by 8 centimeters would curl itself into a pentagon, pop out its flaps and slowly roll across the platform — no battery pack required. — Los Angeles Times, "This 3D-printed robot assembles itself and then rolls away," 22 Aug. 2019 The geometry of the pentagon precludes wallpaper patterns with five-fold symmetry; the same is true for seven- and higher-fold rotations. — Quanta Magazine, "How to Make Impossible Wallpaper," 5 Mar. 2013 To understand the problem with pentagons, let’s start with one of the simplest and most elegant of geometric structures: the regular tilings of the plane. — Quanta Magazine, "The (Math) Problem With Pentagons," 11 Dec. 2017 Swapping out one hexagon for a polygon with fewer sides — a pentagon, say — introduces a singularity and generates positive curvature, like the outer curve of a doughnut. — New York Times, "‘The logic of the weave’," 29 July 2019 In the 1970s, Marjorie Rice, a homemaker with no mathematical background, ran across a Scientific American column about pentagons that tile the plane. — Quanta Magazine, "Decades-Old Graph Problem Yields to Amateur Mathematician," 17 Apr. 2018 Feeling comfortable Previous SlideNext Slide On the outside, the MDX Sport Hybrid looks a lot like its conventional-engine counterpart, including its diamond-pentagon grille along with LED headlamps and fog lights. — Eric Bangeman, Ars Technica, "Love the hardware, hate the UI: The Acura MDX Sport Hybrid," 13 Dec. 2018 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 2018These 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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More Definitions for pentagon
pentagon
noun
English Language Learners Definition of pentagon
mathematics
: a flat shape that has five sides and five corners
: the building in Washington, D.C., that is the headquarters of the U.S. Department of Defense
: the leaders of the U.S. military
See the full definition for pentagon in the English Language Learners Dictionary
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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