Breadcrumb Home > Thesaurus > P Synonyms of polycythemia Find synonyms for: Noun1. polycythemia, blood disease, blood disorderusage: a disorder characterized by an abnormal increase in the number of red blood cells in the bloodWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: temporize Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language