# nonidentity

> English word · Noun

## Definitions
1. Difference, distinction; failure to be identical.
2. An operator which modifies its operand, and which therefore is not the identity.

## Etymology
From non- + identity.

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