"Heptagon" Natural Recordings by Native Speakers
A heptagon is a polygon with 7 sides.
A heptad is a group of seven things. It can also refer to a set of seven elements or a series of seven events. In music, a heptad is a group of seven notes or chords.
A heptade is a group of seven things, often referring to a series of seven events, items, or measures. It can also refer to a type of poetic stanza or musical composition that consists of seven lines. The word "heptade" comes from the Greek word "hepta," meaning "seven."