Medical Definition of Neutrophil. Neutrophil: A type of white blood cell, a granulocyte that is filled with microscopic granules, little sacs containing enzymes that digest microorganisms. Also known as polymorphonuclear leukocyte or poly.
Definition of Neutropenia. Neutropenia: Not enough neutrophils, neutrophils being a type of white blood cell (specifically a form of granulocyte) filled with neutrally-staining granules, tiny sacs of enzymes that help the cell to kill and digest microorganisms it has engulfed by phagocytosis.
Neutropenia definition can be summarized as a condition where the neutrophils level is peculiarly low in the blood.They are WBCs (white blood cells) formed within the bone marrow to consume bacteria.eutropenia definition can be summarized as a condition where the neutrophils level is peculiarly low in the blood.