Heptad definition

hĕptăd
A group or series of seven.
noun
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A series or group of seven.
noun
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A group of seven things.
noun
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Other Word Forms

Noun

Singular:
heptad
Plural:
heptads

Origin of heptad

  • Greek heptas heptad- the number seven from hepta seven septm̥ in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • hepta- +‎ -ad

    From Wiktionary