hemoglobin
/ˈhiːməˌɡloʊbɪn/
noun
- A red protein in red blood cells that carries oxygen from the lungs to the rest of the body and returns carbon dioxide to the lungs.
- A low hemoglobin count can make you feel tired and weak.
- When you breathe in, hemoglobin in your blood picks up oxygen from your lungs.
- Doctors check hemoglobin levels to see if a person has anemia.