See Also: Haem(medicine)
haem a(medicine)
haem c(medicine)
haem(dictionary)
haem A-farnesyltransferase(medicine)
haem polymerase(medicine)
cytochrome C1 haem lyase(medicine)
haem oxygenase (decyclizing)(medicine)
non-haem iron protein(medicine)

haem (iou)



haem noun. [hi:m] Also heme. E20.
[Back-form. from HAEMOGLOBIN.]
Chemistry & Biochemistry. A coordination compound in which an iron atom is chelated within a porphyrin molecule; esp. (the original sense) that complex of ferrous iron and protoporphyrin forming the red non-protein constituent of haemoglobin.