Howell-Jolly body

noun

How·​ell-Jol·​ly body ˈhau̇-əl-zhȯ-ˈlē-  -ˈjäl-ē- 

: one of the basophilic granules that are probably nuclear fragments, that sometimes occur in red blood cells, and that indicate by their appearance in circulating blood that red cells are leaving the bone marrow while incompletely mature (as in certain anemias)