compartments is a form of:

Incombustible



adjective
1.
ដែលមិនអាច ឆេះបាន, ដែលមិនអាចដុតឆេះបាន, មិនឆេះ
ENGLISH MEANING
adjective
1.
Not combustible; not capable of being burned, decomposed, or consumed by fire; uninflammable; as, asbestus is an incombustible substance; carbon dioxide is an incombustible gas.