uninflammable
Definitions
Not capable of being set on fire; nonflammable.
Resistant to combustion or ignition.
Examples
The safety regulations require that all curtains in the theater be made of uninflammable material.
Because the chemical compound is completely uninflammable, it is often used as a fire-retardant coating for industrial machinery.
Synonyms
fireproof nonflammable incombustible noncombustible flameproof