# orthonormal

> English word · Adjective · frequency rank #94,080

## Definitions
1. Of a set of vectors, both orthogonal and normalized.
2. Of a linear transformation: that preserves both angles and lengths.

## Etymology
Blend of orthogonal + normal, equivalent to ortho- + normal.

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