fireproof

Resistant to damage from fire.

Adjective

  1. Resistant to damage from fire.
    • The fireproof safe will protect documents inside for up to four hours in a standard house fire.
    • When I was in the States, three years ago, the head porter at one hotel took pains to impress on me that the building was absolutely fireproof. - 1914, Ernest Bramah, Max Carrados:

    Synonyms: fire-resistant flame-retardant refractory

Origin

Etymology tree Proto-Indo-European *péh₂wr̥ Proto-Germanic *fōr Proto-West Germanic *fuir Old English fȳr Middle English fyr English fire English -proof English fireproof From fire + -proof.

Forms

more fireproof most fireproof fire-proof

Derived

fireproofness nonfireproof unfireproof

Verb

  1. To make resistant to damage from fire.
    • I hastily fireproofed my clothing somewhat by pouring a bucket of water over myself before dashing into the flames.

Forms

fireproofs fireproofing fireproofed

Related

firebreak