Chem.
a dark or black metallic crystalline compound, FeS, insoluble in water, soluble in acids, used in ceramics and to generate hydrogen sulfide.
Chem.
a dark or black metallic crystalline compound, FeS, insoluble in water, soluble in acids, used in ceramics and to generate hydrogen sulfide.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012