A bluish or purplish coloring of the skin, nails and mucuous membranes caused by a lack of oxygen in the blood. This occurs when more than 50 g/L of hemoglobin in the blood becomes deoxygenated.
From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.
Cy`a*no"sis (s?`?-n?"s?s), n. [NL. See Cyanic.] Med.
A condition in which, from insufficient aration of the blood, the surface of the body becomes blue. See Cyanopathy.
© Webster 1913.
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