# Faà di Bruno's formula

> English word · Proper noun

## Definitions
1. An identity that generalizes the chain rule to higher derivatives.

## Etymology
Named after Francesco Faà di Bruno, though he was not the first to state or prove the formula.

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