Main Entry: hap·to·glo·bin

Pronunciation: \ˈhap-tə-ˌglō-bən\

Function: noun

Etymology: International Scientific Vocabulary, from Greek haptein + International Scientific Vocabulary hemoglobin

Date: 1941

: any of several forms of an alpha globulin found in blood serum that can combine with free hemoglobin in the plasma and thereby prevent the loss of iron into the urine