the amount of resistance of a material or construction to fire.
[fahyuh r-ri-zis-tuh nt] /ˈfaɪər rɪˌzɪs tənt/ adjective 1. totally or almost totally unburnable. 2. .
[fahyuh r-ri-tahr-dnt] /ˈfaɪər rɪˌtɑr dnt/ adjective 1. able to slow or check the spread of destructive fire.
[fahyuh r-room, -roo m] /ˈfaɪərˌrum, -ˌrʊm/ noun, Nautical. 1. a chamber in which the boilers of a steam vessel are fired.
[fahyuh r-seyf] /ˈfaɪərˌseɪf/ adjective 1. being so constructed or protected as to be from destruction by .