1 heptad | Definition of heptad

heptad

noun
hep·​tad | \ ˈhep-ËŒtad How to pronounce heptad (audio) \

Definition of heptad

: a group of seven

First Known Use of heptad

1660, in the meaning defined above

History and Etymology for heptad

Greek heptad-, heptas, from hepta

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Rhyming Dictionary: Words that rhyme with heptad