Hæ*mat"o*in (hē*măt"?*ĭn),
n. [Hæmato- + -in.]
(Physiol. Chem.) A substance formed from the hematin of
blood, by removal of the iron through the action of concentrated
sulphuric acid. Two like bodies, called respectively
hæmatoporphyrin and hæmatolin, are formed
in a similar manner.