Methaemoglobin
Pronunciation : Met`h?m*o*glo"bin ( or )
Part of Speech : n.
Etymology : [Pref. met- + h.] (Physiol. Chem.)
Definition : Defn: A stable crystalline compound obtained by the decomposition of hemoglobin. It is found in old blood stains.
Source : Webster's Unabridged Dictionary, 1913