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hematin n. 血色素 血色素 hematin n 1: a complex red organic pigment containing iron and other atoms to which oxygen binds [synonym: {heme}, {haem}, {hematin}, {haemitin}, {protoheme}] Hematin \Hem"a*tin\, n. [Gr. a"i^ma, a"i`matos, blood.]
1. Hematoxylin. [1913 Webster] 2. (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. [1913 Webster] Haematoxylin \H[ae]m`a*tox"y*lin\ (-t[o^]ks"[i^]*l[i^]n), n. [See {H[ae]matoxylon}.] (Chem.) The coloring principle of logwood. It is obtained as a yellow crystalline substance, {C16H14O6}, with a sweetish taste. Formerly called also {hematin}. [1913 Webster]
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