What is another word for haematoidin?
Pronunciation: [hˈiːmɐtˌɔ͡ɪdɪn] (IPA) 
Haematoidin is a yellow or brown pigment formed from the breakdown of haemoglobin in red blood cells. Synonyms of haematoidin include bilirubin, aurobilin, hematoidin, and biliverdin. Bilirubin is a yellow pigment that is formed by the breakdown of heme, a component of haemoglobin. Aurobilin is a yellow pigment that is derived from bilirubin and can be found in urine. Hematoidin is a brown and yellowish pigment that is derived from the breakdown of red blood cells. Biliverdin is a green pigment that is formed by the breakdown of heme and can be found in bile. Overall, these synonyms demonstrate the various forms and colors of pigments that result from the breakdown of haemoglobin.
