1. A complex red organic pigment containing iron and other atoms to which oxygen binds
   - heme [N. Amer], haem [Brit, Cdn], hematin [N. Amer], haemitin, haematin [Brit, Cdn]

Type of: pigment

Part of: cytochrome, haemoglobin [Brit, Cdn], Hb, hemoglobin [N. Amer], myoglobin

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