World English Dictionary
polycythaemia or esp (US) polycythemia (ˌpɒlɪsaɪˈθiːmɪə)
an abnormal condition of the blood characterized by an increase in the number of red blood cells. It can occur as a primary disease of unknown cause (polycythaemia vera or erythraemia) or in association with respiratory or circulatory diseases
[C19: from poly- + cyto- + -haemia]
polycythemia or esp (US) polycythemia
[C19: from poly- + cyto- + -haemia]

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