hemoglobin

Definition of hemoglobin
National Cancer Institute

hemoglobin

(HEE-moh-GLOH-bin)
A protein inside red blood cells that carries oxygen from the lungs to tissues and organs in the body and carries carbon dioxide back to the lungs. Testing for the amount of hemoglobin in the blood is usually part of a complete blood cell (CBC) test.

Source: NCI Dictionary of Cancer Terms