What is another word for "incombustibility"?

Roget's Thesaurus (1911) lists these synonyms for "incombustibility": air, amianth, amianthus, annihilator, asbestos, attic, benumb, bite, box, brigade, burn, central, chatter, chill, congeal, congelation, conglaciation, cool, cooling, cut, damp, density, earth, extinguish, fan, fire, fireman, flax, flexible, freeze, frigorific, frozen, glaciate, ice, infrigidation, insulation, make, marrow, nip, out.