an abnormal increase in the number and concentration of circulating red blood corpuscles
Origin of polycythemiapoly- + cyt(o)- + -hemia
A condition marked by an abnormally large number of red blood cells in the circulatory system.
Origin of polycythemiapoly- cyt(o)- -hemia
- (pathology) A rare disorder in which the bone marrow produces an abnormally large amount of blood cells, often red blood cells.