plasmacytosis

noun
plas·​ma·​cy·​to·​sis | \ ˌplaz-mə-sī-ˈtō-səs How to pronounce plasmacytosis (audio) \
plural plasmacytoses\ -​ˌsēz How to pronounce plasmacytoses (audio) \

Medical Definition of plasmacytosis

: the presence of abnormal numbers of plasma cells in the blood