elliptocytosis

noun

el·​lip·​to·​cy·​to·​sis i-ˌlip-tə-ˌsī-ˈtō-səs 

plural elliptocytoses -ˌsēz 

: a human hereditary trait manifested by the presence in the blood of red blood cells which are oval in shape with rounded ends

called also ovalocytosis