noun, noun which may take the genitive case particle 'no'
non-flammability; incombustibility
Technical term used in materials science, building codes, and safety regulations. Often appears in compound nouns like 不燃性材料 (non-combustible material).
This building material has high incombustibility.
Please put out non-burnable trash in the designated bags.
可燃性 describes materials that can catch fire and burn, while 不燃性 describes materials that do not burn.
Compound of 不 (non-) + 燃 (burn) + 性 (-ity, property). A straightforward Sino-Japanese technical term.