fire diamond
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English
Etymology
One of the four divisions of the diamond-shaped symbol indicates flammability.
Noun
fire diamond (plural fire diamonds)
- (informal) A coloured diamond symbol identifying the specific risks posed by a hazardous material according to the NFPA 704 classification.
- 1999, Gayle Woodside, Hazardous Materials and Hazardous Waste Management, page 133:
- Many facilities that manufacture, use, or store hazardous materials use the NFPA fire diamond to communicate fire hazards. Indeed, numerous cities have local regulations or ordinances requiring the use of fire diamonds or equivalent communication/warning labels.