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heptagonal

American  
[hep-tag-uh-nl] / hɛpˈtæg ə nl /

adjective

  1. having seven sides or angles.


Etymology

Origin of heptagonal

First recorded in 1605–15; heptagon + -al 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The heptagonal shape and the animals on it refer to a set of indigenous teachings that guide how people should treat one another - with love, respect, courage and humility.

From BBC • Apr. 2, 2026

An engraved, heptagonal shield commemorating the loss of 11 men in an incident involving the town's Queen Victoria blast furnace on 4 November 1975 is testimony to that.

From BBC • Mar. 27, 2025

In the grubby, working-class suburb of Spandau in the British sector of Berlin stands a huge, rust red castle surrounded by 15 acres of grounds and a stout brick heptagonal wall.

From Time Magazine Archive

Some barkeeps banned the heptagonal, and workers in a Glamorgan radio factory refused to accept them in their pay envelopes.

From Time Magazine Archive

It is a little heptagonal recess, paved with white marble and roofed with a shell-like cupola of marble of a single block.

From Southern Spain by Calvert, A. F. (Albert Frederick)