Septennial
/sɛpˈtɛn.i.əl/noun
Occurring every seven years or lasting for seven years.
Did you know?The seven-year span became politically significant in Britain through the Septennial Act of 1716, which extended the maximum life of Parliament from three years to seven.
Etymological Timeline
Proto-Indo-European
PIE
*septm̥
“Seven”
Ancient Greek
Greek
heptá
“Seven”
Classical Latin
Latin
septem
“Seven”
Classical Latin
Latin
septennis
“Lasting seven years; occurring every seven years”
Medieval Latin
Latin
septennialis
“Relating to a period of seven years”
15th Century
English
septennial
“Occurring every seven years or lasting seven years”
Modern English
English
septennial
“Occurring every seven years or lasting seven years”