septennial

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.

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. 2013.
Cite This Source Link To septennial
00:10
Septennial is always a great word to know.
So is doohickey. Does it mean:
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a gadget; dingus; thingumbob.
Collins
World English Dictionary
septennial (sɛpˈtɛnɪəl) [Click for IPA pronunciation guide]
 
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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