# septendecennial

> English word · Adjective · IPA /ˌsɛptəndɛˈsɛn.i.əl/

## Definitions
1. Occurring every seventeen years; pertaining to or designating a seventeen-year interval.

## Etymology
From Latin septendec(im) (“seventeen”) + -ennial, after biennial, septennial, etc. By surface analysis, septen- + decennial.

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