# Cartesian natural transformation

> English word · Noun

## Definitions
1. A natural transformation whose naturality squares are pullbacks.

## Etymology
So called because its naturality squares are Cartesian squares.

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