hep·​ta·​gon | \ ˈhep-tə-ˌgän How to pronounce heptagon (audio) \

Definition of heptagon

: a polygon of seven angles and seven sides

Illustration of heptagon

Illustration of heptagon

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Other Words from heptagon

heptagonal \ hep-​ˈta-​gə-​nᵊl How to pronounce heptagon (audio) \ adjective

Examples of heptagon in a Sentence

Recent Examples on the Web Nearby, the bug must make seven such turns, signifying a heptagon with an equal and opposite amount of negative curvature, the kind in a saddle. Quanta Magazine, "Scientists Conjure Curves From Flatness," 6 Jan. 2015

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'heptagon.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of heptagon

1570, in the meaning defined above

History and Etymology for heptagon

Greek heptagōnos heptagonal, from hepta + gōnia angle — more at -gon

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Time Traveler for heptagon

Time Traveler

The first known use of heptagon was in 1570

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Cite this Entry

“Heptagon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heptagon. Accessed 23 Jan. 2021.

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More Definitions for heptagon


How to pronounce heptagon (audio)

English Language Learners Definition of heptagon

mathematics : a flat shape that has seven sides and seven angles


hep·​ta·​gon | \ ˈhep-tə-ˌgän How to pronounce heptagon (audio) \

Kids Definition of heptagon

: a closed geometric figure having seven angles and seven sides

Comments on heptagon

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