| NOUN | substance | haematoidin, bilirubin, hematoidin | an orange-yellow pigment in the bile that forms as a product of hemoglobin |
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| Meaning | An orange-yellow pigment in the bile that forms as a product of hemoglobin; excess amounts in the blood produce the yellow appearance observed in jaundice. | |
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| Synonyms | bilirubin, hematoidin | |
| Broader | animal pigment | Pigment occurring in animals |