HAEMOGLOBIN -
Noun: Abbreviated Hb, is a substance in the red blood cells of the blood made up of iron and protein. It carries oxygen from the lungs to the tissues and some of the carbon dioxide from the tissues to the lungs. Haemoglobin is the chemical that gives the red colour to the blood. If concentrations of Hb are below 10 grams per dL (deci =1/10th, L = Litre), it can cause headaches, tiredness and lethargy. If below 8 g/dL, it can cause breathing difficulties on exercise, dizziness due to reduced oxygen reaching the brain, sharp chest pains due to reduced oxygen supply to the heart muscles and palpitations as the heart works harder to compensate. Spelled hemoglobin the US and Canada.

Greek - haîma = blood +

Latin - globulus = globe (as in anything rounded like a globe)

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