copper sulfide
nounDefinition of copper sulfide
: any sulfide of copper: such as
a
: the black crystalline sulfide Cu2S occurring naturally as chalcocite
— called also cuprous sulfide
b
: the black, bluish black, or brownish black crystalline sulfide CuS occurring naturally as covellite and precipitated by hydrogen sulfide from a solution of a cupric salt
— called also cupric sulfide