PMN: meaning, definitions and examples
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PMN
[ ˌpiːɛmˈɛn ]
medical terminology
PMN stands for polymorphonuclear leukocytes, which are a type of white blood cell characterized by their irregularly shaped nuclei. They play a critical role in the immune response by responding to infection and inflammation.
Synonyms
neutrophils, white blood cells
Examples of usage
- The patient's blood test showed an elevated level of PMN.
- PMNs are essential for fighting bacterial infections.
- A high PMN count may indicate an underlying infection.
- Clinicians often assess PMN levels to monitor the patient's immune health.
Etymology
The term PMN originated from the medical field, specifically referring to a group of white blood cells known as polymorphonuclear leukocytes. The word 'polymorphonuclear' is derived from the Greek roots 'poly-' meaning 'many', 'morpho-' meaning 'form', and 'nuclear' relating to the nucleus of the cell. These cells are named for their diverse and irregularly shaped nuclei, which can take on various forms. They are a key component of the innate immune system, first responding to infections and inflammation. PMNs dominate the early stages of the immune response, and understanding their function has been critical in immunology and pathology. The terminology has evolved over time as research has expanded our understanding of immune cells and their contributions to health and disease.