Fireproof

Origin

fire + -proof

Full definition of fireproof

Adjective

1. Resistant to damage from fire.The fireproof safe will protect documents inside for up to four hours in a standard house fire.

Synonyms

• (resistant to damage from fire): fire-resistant, flame-retardant

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.