The Collaborative International Dictionary
fire-resisting
fire-resistant \fire-resistant\ fire-resisting \fire-resisting\ fire-resistive \fire-resistive\adj. Not able to burn or able to burn only with difficulty. [Narrower terms: noncombustible (vs. combustible), incombustible]
Syn: fireproof.
WordNet
fire-resisting
adj. difficult to burn [syn: fire-retardant, fire-resistant, fire-resistive]