English Dictionary

fire diamond

noun

(informal) A coloured diamond symbol identifying the specific risks posed by a hazardous material according to the NFPA 704 classification.

The fire diamond indicates the level of hazard associated with a chemical substance.

意味（1）

(informal) A coloured diamond symbol identifying the specific risks posed by a hazardous material according to the NFPA 704 classification.

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.