# fire diamond

> English word · Noun

## Definitions
1. A coloured diamond symbol identifying the specific risks posed by a hazardous material according to the NFPA 704 classification.

## Etymology
One of the four divisions of the diamond-shaped symbol indicates flammability.

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