ˈheməd.ə̇n, ˈhēm- noun
( -s )
Etymology: International Scientific Vocabulary hemat- + -in
1. or hem·a·tine -əˌtēn, -əd.ə̇n : hematein
hematin extract crystals
— used especially of preparations for use in dyeing; see dye table I (under Natural Black 1 )
2.
a. : a compound derived from oxidized heme and usually obtained in aqueous alkaline solutions or as a brownish black or bluish black solid C 34 H 32 N 4 O 4 FeOH by treatment of hemin chloride with alkali; ferriprotoporphyrin hydroxide
b. : any of several similar compounds regarded as formed by the breakdown of hemoglobin especially in some pathological conditions
c. : any of various similar iron-porphyrin derivatives or closely related pyrrole derivatives — compare heme 2