(|)met+ noun
Etymology: International Scientific Vocabulary meta- + hemoglobin
: a soluble brown crystalline basic pigment that is found in normal blood in much small amounts than hemoglobin, that is formed from blood, hemoglobin, or oxyhemoglobin by oxidation (as by ozone, peroxide, ferricyanide, permanganate), and that differs from hemoglobin in containing ferric iron instead of ferrous iron and in being unable to combine reversibly with molecular oxygen — called also ferrihemoglobin, hemiglobin