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A leukocyte that has granules in its cytoplasm.granulocyte

(Science: haematology) leucocyte with conspicuous cytoplasmic granules. In humans the granulocytes are also classified as polymorphonuclear leucocytes and are subdivided according to the staining properties of the granules into eosinophils, basophils and neutrophils (using a Romanovsky type stain), some invertebrate blood cells are also referred to, not very helpfully, as granulocytes. Granulocytes are a type of leucocyte (white blood cell) that possesses granules in their cytoplasm, thus giving them their characteristic name.

Our white blood cell volume typically consists of around 70% granulocytes, the remainder being agranulocytes.

They can be further specialised into three different types, being basophils, eosinophils and [[neutrophils.