ˈ ̷ ̷ ̷ ̷+ˌ- noun
( -s )
Etymology: cyt- + -chrome
: any of several respiratory pigments that occur in animal and plant cells, play a major role in intracellular oxidations (as by oxidizing flavoproteins and being in turn oxidized by means of cytochrome oxidase), and are related chemically to hemoglobin in that they are complexes of iron, a porphyrin, and a protein ; especially : cytochrome c