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
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
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 4 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share