- of the number seven
- consisting of or forming a group of seven
Origin of septenaryClassical Latin septenarius from septem, seven
a group or set of seven, esp. seven years
From the Latin septÄ“nÄrius (“consisting of seven each"), from septÄ“nÄ« (“seven each", “seven at a time") + -Ärius (whence the English suffix -ary).