1. treated or constructed so as to be resistant to fire or to prevent the spread of fire

1. past tense and past participle of fireproof; to make something resistant to fire by treating or coating it with a fire-resistant substance

Examples

• The new building code requires all curtains to be fireproofed.
• The contractor fireproofed the wooden beams with a special chemical coating.
• These fireproofed materials meet safety standards for public buildings.
• The fabric was fireproofed to reduce the risk of rapid flame spread.
• They fireproofed the insulation in the attic to improve fire safety.
• Fireproofed doors are essential in hospitals and schools.