nhematina complex red organic pigment containing iron and other atoms to which oxygen binds
Webster's Revised Unabridged Dictionary
Hematin(Physiol. Chem) A bluish black, amorphous substance containing iron and obtained from blood. It exists the red blood corpuscles united with globulin, and the form of hemoglobin or oxyhemoglobin gives to the blood its red color.
Century Dictionary and Cyclopedia
nhematinA brown amorphous substance derived from hemoglobin in the blood, also forming scales of a bluish-black color with a metallic luster.