noun.
A yellow to brown or red mineral, CdS, the only ore of cadmium.
The Century Dictionary and Cyclopedia
noun.
Native cadmium sulphid, a rare mineral occurring in hemimorphic hexagonal crystals of a honey-yellow or orange-yellow color, and also as a pulverulent incrustation on sphalerite.
the GNU version of the Collaborative International Dictionary of English
noun.
Native cadmium sulphide, a mineral occurring in yellow hexagonal crystals, also as an earthy incrustation.