septennial

[sep-ten-ee-uhl]

sep·ten·ni·al

[sep-ten-ee-uhl]
adjective
1.
occurring every seven years.
2.
of or for seven years.
noun
3.
something that occurs every seven years.

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Septennial is always a great word to know.
So is lollapalooza. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.

Origin:
1630–40; < Late Latin septenni(s) (Latin septuennis) seven years old (sept(em) seven + -enn-, combining form of annus year + -is adj. suffix) + -al1

sep·ten·ni·al·ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To septennial
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World English Dictionary
septennial (sɛpˈtɛnɪəl)
 
adj
1.  occurring every seven years
2.  relating to or lasting seven years
 
[C17: from Latin septennis, from septem seven + annus a year]
 
sep'tennially
 
adv

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