1. Occurring every seven years.
2. Consisting of or continuing for seven years.
An event that occurs every seven years.

[From Late Latin septennium, period of seven years, from Latin septennis, of seven years : septem, seven; see septm̥ in Indo-European roots + annus, year; see at- in Indo-European roots.]

sep·ten′ni·al·ly adv.


1. occurring every seven years
2. relating to or lasting seven years
[C17: from Latin septennis, from septem seven + annus a year]
sepˈtennially adv


(sɛpˈtɛn i əl)

1. occurring every seven years.
2. lasting or consisting of seven years.
[1630–40; < Late Latin septenni(s) (Latin septuennis) seven years old (sept(em) seven + -enn-, comb. form of annus year + -is adj. suffix) + -al1]
sep•ten′ni•al•ly, adv.


adjsiebenjährig; (= every seven years)alle sieben Jahre stattfindend, siebenjährlich
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References in classic literature ?
Is it to be presumed, that at any future septennial epoch the same State will be free from parties?
Does it not sometimes too much resemble that septennial exhibition of humility, which calls forth so much smiling condescension from the powerful, while it conveys "an hour's importance to the poor man's heart?
Despite the family's having moved to London, this concern with Irish affairs continues to some extent into the final instalment of 1770, as when Griffith reports on parliamentary debates (such as that concerning the Septennial Bill) or on the acquittal of some Whiteboy agitators at the assizes in Clonmel, Tipperary, in 1767.
The Radicals wanted Annual Parliaments after England had tried Triennial Parliaments originally in 1641, and then in 1694, and Britain had tried Septennial Parliaments after the Union, in 1716, and eventually Five-Year Parliaments in 1911.
This debate became even more fevered when the Hanoverian George I, and his Whig supporters in Parliament, claimed that elections every three years were too costly and introduced the Septennial Act 1715, thereby increasing the length of a single Parliament to seven years to deny Tories who supported the Stuarts electoral opportunities.
A Tory government would have to amend the Septennial Act of 1715, which requires elections at least every five years.
The new venue is the brainchild of Steve Smith, director of Septennial Entertainment which already owns Sugar, The Sausage, Moo bar and The Garden in Leamington.
As for the septennial doubling of accessibility to police in Mr Brunstrom's Utopia, the rest of us are left hoping for the Magnificent Seven to gallop in, with guns blazing, to encourage the bandits to think better of their fondness for crime.
An example is the Septennial Act of 1716, which overturned the entrenchment of three-year parliamentary terms enacted by the Triennial Act of 1694.
Something of a mixed constitution was still in effect when the Jews of Jerusalem submitted to Alexander's overlordship, because he permitted local autonomy and exempted them from tribute during the septennial fallow.
But this episode had been transitory, linked to the septennial redistribution of wealth and political favors by the corrupt Institutional Revolutionary Party as the outgoing president gave way to his chosen successor.
However, that sovereign will derives its legitimacy from a particular historical event--the passage of the Septennial Act--which Parliament could be said to have created itself.