Adjective: incombustible ,in-kum'bús-tu-bul
- Not capable of igniting and burning
"Inside stables should be constructed of incombustible material";
- noncombustible
See also: fireproof, fire-resistant, fire-resisting, fire-resistive, fire-retardant, flameproof, flame-retardant, nonflammable
Antonym: combustible