Where does “septuennium” come from?
septuennium (Latin) comes from Latin septuennis, from Latin annus, from Proto-Italic atnos, from Proto-Indo-European h₂et-no-, from Proto-Indo-European h₂et- — grass.
septuennium (Latin): septennium, †septenniad
Ancestry of “septuennium”, step by step
Words derived from “septuennium”