polycythaemia noun. [,pɒlɪsʌɪ'Ɵi:mɪǝ] Also *polycythemia. M19.
[from POLY- + -CYTE + HAEMO- + -IA¹.]
Medicine. An abnormally increased concentration of red cells in the blood.
polycythaemia vera ['vɪǝrǝ] [Latin = true] polycythaemia that appears to be primary, a disease of unknown aetiology that is typically marked by itching, cyanosis, and disturbances in the head such as dizziness and tinnitus.

■ polycythaemic adjective of, pertaining to, or exhibiting polycythaemia E20.

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