1. not capable of catching fire or burning; resistant to combustion

Examples

• The building was constructed with noncombustible materials to meet fire safety codes.
• Asbestos was once widely used because it is noncombustible.
• Glass and metal are noncombustible substances.
• The manufacturer advertised the fabric as noncombustible for children's sleepwear.
• Noncombustible insulation is preferred in high-temperature industrial applications.
• The fire inspector verified that all interior walls used noncombustible drywall.