adjective. Impervious or resistant to damage by fire.

transitive verb. To make fireproof.

To render proof against fire by some protecting cover, by chemical treatment, or by construction with incombustible materials.

Proof against fire; so constructed or protected as to be incombustible.

adjective. Proof against fire; incombustible.

adjective. Resistant to damage from fire.

verb. To make resistant to damage from fire.

adjective. impervious to damage by fire

verb. make resistant to fire

"The term fireproof buildings shall apply to all buildings in which the principal parts are made of incombustible materials, these principal parts consisting mainly in walls, floor construction, roof construction, furring, ceiling, stairs and all shaft enclosures."

incombustible  noncombustible  

proof  

5  Sheetrock  bald-faced  barn-like  bombproof  

airtight  ballproof  bombproof  bulletproof  burglarproof  

fireproofed  fireproofing