[ ĕr′ə-thrēmē-ə ]


A chronic form of polycythemia of unknown cause, characterized by an increase in blood volume and red blood cells, bone marrow hyperplasia, redness or cyanosis of the skin, and enlargement of the spleen.Osler's disease Osler-Vaquez disease polycythemia rubra polycythemia vera Vaquez disease
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.