polycythemia vera

polycythemia ve·ra

noun \-ˈvir-ə\

Definition of POLYCYTHEMIA VERA

: chronic polycythemia that is a myeloproliferative disorder of unknown cause characterized by an increase in total blood volume and viscosity and typically accompanied by nosebleed, headache, dizziness, weakness, itchy skin, reddish complexion, distension of the circulatory vessels, and enlargement of the spleen—called also erythremia, erythrocythemia, Vaquez's disease