fireproof
v. B2 Upper Intermediate US //ˈfaɪɝˌpɹuf// UK //fˈaɪəpɹuːf// fire·proof
v. describing something that cannot catch fire or burn. You use this to talk about materials or buildings that are safe from flames.
v. resistant to or incapable of being ignited by fire. Often used to describe construction materials or safety equipment designed to prevent the spread of flames.
The new office building is made of fireproof glass.
The kitchen cabinets are made of fireproof materials to protect the home from accidental kitchen fires.
While the exterior of the skyscraper is fireproof, the interior wiring must still be inspected regularly to ensure that electrical faults do not compromise the structural integrity of the building.
From fire + -proof.