octennial
/ɒkˈtɛnɪəl
/adjective
1Recurring every eight years.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.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.
- insh'allah
- in shore
- inshore
- inshore of
- in short
- in short order
- in short supply
- in shreds
- inside
- inside baseball
- inside country
- inside forward
- inside information
- inside job
- inside joke
- inside left
- inside leg
- inside money
- inside of
- inside out
- Inside Passage
- insider
- insider dealer
- insider dealing
- inside right