ˌerəˈthrōsə̇s noun
( plural erythro·ses -ōˌsēz)
Etymology: New Latin, from erythr- + -osis
1. : a red or purplish color of the skin (as of the face) resulting from vascular congestion (as in polycythemia) : plethora
2. : a hyperplastic condition of tissues that form red blood cells