Haemoglobin

World English Dictionary
haemoglobin or (US) hemoglobin (ˌhiːməʊˈɡləʊbɪn, ˌhɛm-, ˌhiːməʊˈɡləʊbɪn, ˌhɛm-)
 
n
See also oxyhaemoglobin 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
 
[C19: shortened from haematoglobulin, from haematin + globulin the two components]
 
hemoglobin or (US) hemoglobin
 
n
 
[C19: shortened from haematoglobulin, from haematin + globulin the two components]

Collins English Dictionary - Complete & Unabridged 10th Edition
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WordNet
haemoglobin

noun
a hemoprotein composed of globin and heme that gives red blood cells their characteristic color; function primarily to transport oxygen from the lungs to the body tissues; "fish have simpler hemoglobin than mammals" [syn: hemoglobin
WordNet® 3.0, © 2006 by Princeton University.
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