# decenniad

> English word · Noun

## Definitions
1. Synonym of decade: a period of 10 years.

## Etymology
From decennium + -iad, q.v.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/word/decenniad