re·tic·u·lo·cyte 
(rĭ-tĭkyə-lō-sīt′)
(rĭ-tĭkyə-lō-sīt′)n.
An immature red blood cell that (in mammals) lacks a nucleus but contains a network of filaments consisting of residual RNA and organelles. Reticulocytes move from the bone marrow into the bloodstream.
[RETICUL(UM) + -CYTE.]
re·tic′u·lo·cytic (-sĭtĭk) adj.