fireproof

adj. fire resistant

v. make resistant to fire, make inflammable

"Fireproof" redirects here. For the album, see Fireproof (album). Fireproofing, a passive fire protection measure, subject to bounding, refers to the act of making materials or structures more resistant to fire, or to those materials themselves, or the act of applying such materials. Applying a bounded fireproofing system to certain structures allows these to have a fire-resistance rating. However, by no means does fireproofing allow treated items to be entirely unaffected by any fire. No conventional materials are immune to the effects of fire at a sufficient intensity and/or duration.
See more at Wikipedia.org...

1) With respect to materials and parts used to confine fire in a designated fire zone, means the capacity to withstand at least as well as steel in dimensions appropriate for the purpose for which they are used, the heat produced when there is a severe fire of extended duration in that zone; and 2) With respect to other materials and parts, means the capacity to withstand the heat associated with fire at least as well as steel in dimensions appropriate for the purpose for which they are used. (14CFR1)

Verb
1. make resistant to fire
(hypernym) proof
Adjective
1. impervious to damage by fire
(similar) noncombustible, incombustible