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Webster 1913 Edition
Hemin
He′min
,Noun.
[Gr.
αἷμα
blood.] (Physiol. Chem.)
A substance, in the form of reddish brown, microscopic, prismatic crystals, formed from dried blood by the action of strong acetic acid and common salt; – called also Teichmann’s crystals. Chemically, it is a hydrochloride of hematin.
☞ The obtaining of these small crystals, from old blood clots or suspected blood stains, constitutes one of the best evidences of the presence of blood.