GHS pictogram
A hazard communication symbol using a black pictogram inside a red-bordered diamond for chemical classification.
Reference Terms
Technical Glossary
This glossary defines the engineering terms used across SafetySymbols.org. It focuses on geometry, color, standards, and field-use language needed to review safety-symbol pages.
ISO 7010
An international standard for registered safety signs, including warning, prohibition, mandatory, emergency, and fire equipment signs.
NFPA 704
A responder-focused hazard identification system using a four-part diamond for health, flammability, instability, and special hazards.
CMYK
A print color model using cyan, magenta, yellow, and black values; useful for production checks where HEX alone is insufficient.
Viewing distance
The practical distance from which a sign must be recognized before a person reaches the hazard or decision point.
Shape type
The safety category communicated by geometry before text is read, such as triangle for warning or circle for mandatory action.