heptagon

Since 16th century, from Ancient Greek ἑπτάγωνον (heptágōnon), from ἑπτά (heptá, “seven”) + γωνία (gōnía, “angle”). By surface analysis, hepta- +‎ -gon.

• (US) enPR: hĕp'təgŏn, IPA^(key): /ˈhɛp.tə.ɡɒn/
• (UK) enPR: hĕp'təgən, IPA^(key): /ˈhɛp.tə.ɡən/

• Audio (US):

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heptagon (plural heptagons)

1. A polygon with seven sides and seven angles.

• 7-gon
• septagon (proscribed)

• heptagonal
• heptagonally

• pathogen, phone tag

Borrowed from French heptagone.

heptagon n (plural heptagoane)

1. heptagon