noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A polygon with seven sides and seven angles. proscribed

Synonyms

All synonyms

heptagon

Example

More examples

"A seven-sided polygon is typically called a heptagon, but is occasionally referred to as a septagon."

Etymology

From Latin septagōnus. By surface analysis, septa- + -gon.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.