Definition of polymorphonuclear in US English:



  • (of a leukocyte) having a nucleus with several lobes and a cytoplasm that contains granules, as in an eosinophil or basophil.

    • ‘Under light microscopy, necrosis in both epidermis and dermis with extensive polymorphonuclear leucocyte infiltration in deep dermis were seen in all three groups.’
    • ‘Zinc has been shown to inhibit some functions of polymorphonuclear leucocytes, to inhibit alveolar macrophage activity, and to facilitate pulmonary tissue injury.’
    • ‘The subsequent developmental ‘stages’ are identical for the three types of granulocytes or polymorphonuclear cells.’
    • ‘These are the eosinophils, neutrophils, and basophils (collectively known as granulocytes or polymorphonuclear leukocytes), mast cells, and monocytes.’
    • ‘The epithelium covering the tonsils is extensively infiltrated by lymphocytes, plasma cells, and polymorphonuclear leucocytes.’