a conjugated protein, consisting of haem and the protein globin, that gives red blood cells their characteristic colour. It combines reversibly with oxygen and is thus very important in the transportation of oxygen to tissues: See also oxyhaemoglobin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
How to use haemoglobin in a sentence
It is very poisonous, uniting with the haemoglobin of the blood to form carbonyl-haemoglobin.
A further striking characteristic of haemoglobin is that it contains iron in its molecule.
In association with this, oxyhaemoglobin has a typical bright red colour, whereas haemoglobin is dark purple.
It is proved, however, that the destruction of the haemoglobin is entirely effected there.
The concentration of the haemoglobin in the corpuscles attains its maximum in the mammal and the bird.