Meaning of septennium in English:

septennium

Pronunciation /sɛpˈtɛnɪəm/

nounplural noun septennia/sɛpˈtɛnɪə/ , plural noun septenniums

rare
  • A specified period of seven years.

    ‘This septennium must designate something peculiar and different from the time following.’
    • ‘In Wurtemburg the fall has been somewhat less striking, the mortality rates for the two septennia and for the year 1894 being 199, 107, and 104 respectively.’

Origin

Mid 19th century from late Latin, from Latin septem ‘seven’ + annus ‘year’.