what does cadmium sulphide mean?

CADMIUM SULPHIDE as NOUN

Meaning
- ore of cadmium
- a rare yellowish mineral consisting of cadmium sulphide in crystalline form
Synonym(s)
- greenockite (what does greenockite mean?)
Hypernyms(s) cadmium sulphide is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
- mineral (what does mineral mean?)