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octennial

Syllabification: oc·ten·ni·al
Pronunciation: /äkˈtenēəl
 
/

Definition of octennial in English:

adjective

rare
1Recurring every eight years.
Example sentences
  • But this explanation appears to be inconsistent with the octennial period of the festival.
1.1Lasting for or relating to a period of eight years.
Example sentences
  • The Bill was, it is true, changed from a septennial to an octennial one.

Origin

mid 17th century: from late Latin octennium 'period of eight years' + -al.

Definition of octennial in:

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