SINCE 1828
pentagonal
adjective
pen·tag·o·nal
| \ pen-ˈta-gə-nᵊl
\
\
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
\
adverb
\
adverb
Examples of pentagonal in a Sentence
Recent Examples on the Web
The proteins of the human papilloma viruses, for instance, were arranged in five-fold pentagonal structures, rather than hexagonal ones. — Quanta Magazine, "The Illuminating Geometry of Viruses," 19 July 2017 The 30-story pentagonal tower with the internationally famous designer and locally prominent footprint in Baltimore’s Inner Harbor will no longer be known as the World Trade Center. — Meredith Cohn, baltimoresun.com, "What has five sides and one new name? Baltimore's World Trade Center gets rebranded," 5 June 2019 When designing the memorial plaza, Baines had the idea to place a large pentagonal flagpole in the middle, with each side representing a branch of the military, just like the granite base of the sculpture. — Kyle Ringo, San Antonio Express-News, "San Antonio’s Vietnam Veterans Memorial built with thousands of small contributions," 27 May 2018 When designing the plaza, Baines had the idea to place a large pentagonal flagpole in the middle, with each side representing a branch of the military, just like the granite base of the sculpture. — Kyle Ringo, Houston Chronicle, "San Antonio’s Vietnam Veterans Memorial built with thousands of small contributions," 27 May 2018 The new World Cup ball comes from historic stock: the original Telstar was the first ball to use the now-familiar truncasted icosahedrom — 12 black pentagonal panels and 20 white ones. — Kevin Baxter, latimes.com, "A closer look at the technology inside the 2018 World Cup soccer ball," 21 May 2018 The mural’s background is in shades of blue, complemented by blue-and-white pentagonal shapes, white stars and red daisies. — USA TODAY, "Years of persistence led to holiday honoring King," 12 Jan. 2018 The architects and designers came up with a unique pentagonal plan for the building that would maximize the site’s odd dimensions. — Alicia Ault, Smithsonian, "Why Is the Pentagon a Pentagon?," 10 Apr. 2017 Across the lineup, LED running lamps, LED taillights, and that big, bold pentagonal grille are standard fare. — Alexander Stoklosa, Car and Driver, "2017 Mazda 6," 13 Aug. 2017These 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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