Definition of hemoglobin in English:

hemoglobin

(British haemoglobin)

noun

Biochemistry
  • A red protein responsible for transporting oxygen in the blood of vertebrates. Its molecule comprises four subunits, each containing an iron atom bound to a heme group.

    • ‘Oxygen is carried in blood by hemoglobin, a protein in red blood cells.’
    • ‘The main task of red blood cells is to transport oxygen bound to haemoglobin from the lungs to the tissues.’
    • ‘The red blood cells carry red blood protein called haemoglobin.’
    • ‘As a test protein we focused on hemoglobin, which has several advantages.’
    • ‘The key, she believes, may be the iron content of the blood and muscle proteins hemoglobin and myoglobin.’

Origin

Mid 19th century: a contracted form of hematoglobulin, in the same sense.

Pronunciation:

hemoglobin

/ˈhēməˌɡlōbən/