fire-resistive, fire-resisting, fire-resistant adj. Not able to burn or able to burn only with difficulty. (Narrower terms: noncombustible (vs. combustible), incombustible)
... be of brick, stone, tile, or concrete, must be supported by a masonry trimmer arch or similar fire-resisting construction. Both hearth and arch should be at least twenty inches wide and not less than two feet longer than the width of ... — If You're Going to Live in the Country • Thomas H. Ormsbee and Richmond Huntley
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