| a white to yellow, crystalline powder, ZnS, soluble in acids, insoluble in water, occurring naturally as wurtzite and sphalerite: used as a pigment and as a phosphor on x-ray and television screens. |
| zinc sulfide n. A yellow to white crystalline compound, ZnS, occurring naturally as sphalerite and wurtzite, and used as a phosphor and as a pigment in the manufacture of paper. |