# novennial

> English word · Adjective

## Definitions
1. Of or relating to a 9-year period.

## Etymology
From novennium (“9-year period”) + -al, q.v.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/novennial