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The Collaborative International Dictionary
Haematosin

Haematosin \H[ae]m`a*to"sin\ (h[e^]m`[.a]*t[=o]"s[i^]n or h[-e]*m[a^]t"[-o]*s[i^]n), n. (Physiol. Chem.) Hematin. [R.]

Wiktionary
haematosin

n. (context biochemistry English) hematin