reticulocytosis

noun
re·​tic·​u·​lo·​cy·​to·​sis | \ -ˌsī-ˈtō-səs How to pronounce reticulocytosis (audio) \
plural reticulocytoses\ -​ˌsēz How to pronounce reticulocytoses (audio) \

Medical Definition of reticulocytosis

: an increase in the number of reticulocytes in the blood typically following hemorrhage or accompanying hemolytic anemia