Chem. [f. prec. + -IN.] The red coloring matter of blood-corpuscles; now called hæmoglobin.
1840. Baly, trans. Müller’s Physiol. (ed. 2), I. 133. The solution of cruorin is reddened less strongly by exposure to air.
1871. trans. Schellen’s Spectr. Anal., 140. By the action of an acid on blood the cruorin is converted into haematin.
