1. not capable of being burned; resistant to fire or combustion

Examples

• The building was constructed with nonburnable materials for safety.
• Asbestos was once popular as a nonburnable insulation material.
• The fire department requires nonburnable storage containers for hazardous chemicals.
• Metal filing cabinets are considered nonburnable office furniture.
• The new regulations specify that all curtains in public buildings must be nonburnable.
• Concrete and steel are examples of nonburnable construction materials.