Noun | 1. | ![]() myelocyte - an immature leukocyte normally found in bone marrow myeloblast - a precursor of leukocytes that normally occurs only in bone marrow blood cell, blood corpuscle, corpuscle - either of two types of cells (erythrocytes and leukocytes) and sometimes including platelets free phagocyte - a phagocyte that circulates in the blood lymph cell, lymphocyte - an agranulocytic leukocyte that normally makes up a quarter of the white blood cell count but increases in the presence of infection granulocyte - a leukocyte that has granules in its cytoplasm monocyte - a type of granular leukocyte that functions in the ingestion of bacteria neutrophil, neutrophile - the chief phagocytic leukocyte; stains with either basic or acid dyes eosinophil, eosinophile - a leukocyte readily stained with eosin |