Where does “septennially” come from?

septennially (English) comes from English septennial, 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- — grass.

septennially (English): Once in every seven years

Definitions

  1. Once in every seven years

Ancestry of “septennially”, step by step

septennially traces back through two separate lines of ancestry.

via English septennial

StepLanguageWordMeaning
1EnglishseptennialLasting or continuing seven years; Happening or...
2EnglishseptenniumA period of seven years
3LatinseptenniumAlternative spelling of septuennium; a period of...
4Latinseptuenniumseptennium, †septenniad
5Latinseptuennisseven-year-old
6Latinannusyear; time; season
7Proto-Italicatnosyear
8Proto-Indo-Europeanh₂et-no-
9Proto-Indo-Europeanh₂et-grass

via English ly

StepLanguageWordMeaning
1EnglishlyAbbreviation of light-year
2VietnameselyAlternative spelling of li
Every word from Proto-Indo-European h₂et-