oc·ten·ni·al

[ok-ten-ee-uhl]
adjective
1.
occurring every eight years.
2.
of or for eight years.

Origin:
1650–60; < Late Latin octenni(um) eight-year period (oct- oct- + -enn-, combining form of annus year + -ium -ium) + -al1

oc·ten·ni·al·ly, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To octennial
Collins
World English Dictionary
octennial (ɒkˈtɛnɪəl) [Click for IPA pronunciation guide]
 
adj
1.  occurring every eight years
2.  lasting for eight years
 
[C17: from Latin octennium eight years, from octo eight + annus year]
 
oc'tennially
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
00:10
Octennial is always a great word to know.
So is lollapalooza. Does it mean:
a stew of meat, vegetables, potatoes, etc.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
Example sentences
The potential also exists for the state legislature to change the current mandated octennial revaluation plan to a four-year plan.
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