# Rodinal

> English word · Proper noun

## Definitions
1. A black-and-white developing agent based on the chemical 4-aminophenol.

## Etymology
Trade name.

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