heptagon

[ hep-tuh-gon, -guhn ]

noun

1. a polygon having seven angles and seven sides.

heptagon

/ ˈhɛptəɡən; hɛpˈtæɡənəl /

noun

1. a polygon having seven sides

heptagon

/ hĕp′tə-gŏn′ /

1. A polygon having seven sides.

Derived Forms

• heptagonal, adjective

Word History and Origins

Origin of heptagon¹

First recorded in 1560–70, heptagon is from the Greek word heptágōnos seven-cornered. See hepta-, -gon

Example Sentences

In the power room of the heptagon a hexan officer turned fiercely to another, who was offering advice.

From Project Gutenberg

As that dazzling wall sprang into being, the sparkling green protection died from the walls of the heptagon.

From Project Gutenberg

The massive heptagon was now drifting back toward Jupiter at constant velocity.

From Project Gutenberg

There he and his fellows labored day after day learning every secret of every item of armament and equipment aboard the heptagon.

From Project Gutenberg

The side of a regular heptagon is equal to half the side of an equilateral triangle inscribed in the same circle.

From Project Gutenberg