Term: yolk copper(I) sulfide
Name: yolk
Synonyms: yolk cell
Definition: Giant syncytial uncleaved cell containing nutrient store for embryonic development in the form of semicrystalline phospholipoprotein and contained within yolk granules.
Ontology: Anatomy Ontology [ZFA:0000084]

Name: copper(I) sulfide
Synonyms: copper(1+) sulfide, copper(I) sulfide, cuprasulfide, cuprous sulfide, dicopper monosulfide, dicopper sulfide, dicopper sulphide, Kupfer(I)-sulfid
Definition: A copper sulfide in which the metal is in the +1 oxidation state.
Ontology: ChEBI [CHEBI:51114]  ( EBI )