Where does “septennial” come from?

septennial (English) comes from English septennium, from Latin septennium, from Latin septuennium, from Latin septuennis, from Latin annus, from Proto-Italic atnos, from Proto-Indo-European h₂et-no-, from Proto-Indo-European h₂et- — grass.

septennial (English): Lasting or continuing seven years; Happening or...

Definitions

  1. Lasting or continuing seven years; Happening or...

Ancestry of “septennial”, step by step

StepLanguageWordMeaning
1EnglishseptenniumA period of seven years
2LatinseptenniumAlternative spelling of septuennium; a period of...
3Latinseptuenniumseptennium, †septenniad
4Latinseptuennisseven-year-old
5Latinannusyear; time; season
6Proto-Italicatnosyear
7Proto-Indo-Europeanh₂et-no-
8Proto-Indo-Europeanh₂et-grass

Words derived from “septennial

Every word from Proto-Indo-European h₂et-Every word from Proto-Indo-European h₂et-no-Every word from Proto-Italic atnos
septennial — Etymology, Origin & Word History | Etymology Explorer