incombustible

[ in-kuh m-buhs-tuh-buh l ]
/ ˌɪn kəmˈbʌs tə bəl /

adjective

not combustible; incapable of being burned; fireproof.

noun

an incombustible substance.

Origin of incombustible

First recorded in 1425–75; late Middle English word from Medieval Latin word incombustibilis. See in-3, combustible

OTHER WORDS FROM incombustible

in·com·bus·ti·bil·i·ty, in·com·bus·ti·ble·ness, noun in·com·bus·ti·bly, adverb

Example sentences from the Web for incombustible

British Dictionary definitions for incombustible

incombustible
/ (ˌɪnkəmˈbʌstəbəl) /

adjective

not capable of being burnt; fireproof

noun

an incombustible object or material

Derived forms of incombustible

incombustibility or incombustibleness, noun incombustibly, adverb