# invalidation

> English word · Noun · IPA /ɪnˌvæl.əˈdeɪ.ʃən/ · frequency rank #72,429

## Definitions
1. The act of invalidating, or the state of being invalidated

## Etymology
From invalidate + -ion or in- + validation.

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