promyelocyte

noun

pro·​my·​elo·​cyte (ˈ)prō-ˈmī-ə-lə-ˌsīt 

: a cell in bone marrow that is in an intermediate stage of development between a myeloblast and a myelocyte and has the characteristic granulations but lacks the specific staining reactions of a mature granulocyte of the blood

called also premyelocyte, progranulocyte

promyelocytic

(ˌ)prō-ˌmī-ə-lə-ˈsit-ik 

adjective