pentagonal
adjective
pen·tag·o·nal
pen-ˈta-gə-nᵊl 
1
: having five sides and five angles
2
: having a pentagon as a cross section or as a base
a pentagonal pyramid
Examples of pentagonal in a Sentence
Recent Examples on the Web
The kitchen is quite small and has an odd, pentagonal shape which Ho kept.
—
Kimberley Mok, Treehugger, 22 Aug. 2023
The daytime footage shows a housing complex composed of five large multi-story apartment buildings arranged in a pentagonal shape.
—Sébastien Roblin, Popular Mechanics, 5 July 2023
The enclosure of the latest Stradivari is a complex one—essentially a pentagonal shape when viewed from above—evolved from the elliptical footprint of the original, which launched in the early 2000s.
—Robert Ross, Robb Report, 28 May 2023
Marjorie Rice, a California housewife, found a new family of pentagonal tilings in 1975.
—Erica Klarreich, Quanta Magazine, 4 Apr. 2023
See All Example Sentences for pentagonal
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Kimberley Mok, Treehugger, 22 Aug. 2023
The daytime footage shows a housing complex composed of five large multi-story apartment buildings arranged in a pentagonal shape.
—Sébastien Roblin, Popular Mechanics, 5 July 2023
The enclosure of the latest Stradivari is a complex one—essentially a pentagonal shape when viewed from above—evolved from the elliptical footprint of the original, which launched in the early 2000s.
—Robert Ross, Robb Report, 28 May 2023
Marjorie Rice, a California housewife, found a new family of pentagonal tilings in 1975.
—Erica Klarreich, Quanta Magazine, 4 Apr. 2023
See All Example Sentences for pentagonal
Cite this Entry
“Pentagonal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pentagonal. Accessed 24 Jul. 2025.
Copy CitationKids Definition
pentagonal
adjective
pen·tag·o·nal
pen-ˈtag-ən-ᵊl
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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