Septennial meaning

sĕp-tĕnē-əl
Lasting seven years.
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Consisting of or continuing for seven years.
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Occurring every seven years.
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An event that occurs every seven years.
noun
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Happening every seven years.
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Lasting or continuing seven years; as, septennial parliaments.
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Happening or returning once in every seven years; as, septennial elections in England.
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Origin of septennial

  • From Late Latin septennium period of seven years from Latin septennis of seven years septem seven septm̥ in Indo-European roots annus year at- in Indo-European roots

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

  • From Late Latin septennium (“a period of seven years").

    From Wiktionary