definition of hematological
Medical Definition of HEMATOLOGY. : a medical science that deals with the blood and blood-forming organs.â heÂ·maÂ·tolÂ·oÂ·gist or chiefly British haeÂ·maÂ·tolÂ·oÂ·gist \-jÉst\ noun.edical Definition of HEMATOLOGY. : a medical science that deals with the blood and blood-forming organs.