flameproof

Word parts

flame + -proof

Adjective

Positive flameproof

Comparative more flameproof

Superlative most flameproof

1. If something is flameproof, it is not flammable.

Verb

Plain form flameproof

Third-person singular flameproofs

Past tense flameproofed

Past participle flameproofed

Present participle flameproofing

1. If you flameproof something, you make it flameproof.