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HOW TO PRONOUNCE

pentagon

/ˈpɛn.təˌɡɑn/

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American Pronunciation Guide · 0:47
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What does pentagon mean?

noun

  1. A polygon with five sides and five angles.
  2. A fort with five bastions.

proper noun

  1. The headquarters of the United States Department of Defense.
More meanings (1)

proper noun

  1. The United States Department of Defense.

Definitions regrouped for readability · CC BY-SA 4.0

IPA pronunciation

/ˈpɛn.təˌɡɑn/

Wiktionary contributors · CC BY-SA 4.0

Other dictionary pronunciations

/ˈpɛntəɡɑn/
Wiktionary contributors · CC BY-SA 4.0

Pronunciation varies by speaker and region. About these dictionary pronunciations.

In the pages of books

See this word in context.

Three place themselves at the corner of an equilateral triangle, four at those of a square, and five form a pentagon.
A. C. (Albert Charles) SewardDarwin and Modern ScienceProject Gutenberg ebook #1909
The walls of the pentagon were from four to six feet high.
Emory Adams AllenThe Prehistoric World; Or, Vanished RacesProject Gutenberg ebook #2873
More book examples (1)
But, about three centuries afterwards, the Law decided that in all towns containing a population above ten thousand, the angle of a Pentagon was the smallest house-angle that could be allowed consistently with the public safety.
Edwin Abbott AbbottFlatland: A Romance of Many DimensionsProject Gutenberg ebook #97