Definition

1. Noun:
   • A type of white blood cell: A granulocyte is a leukocyte (white blood cell) characterized by the presence of granules in its cytoplasm. These granules contain enzymes and other substances that help the cell fight infection.

Usage

• Granulocytes are a crucial part of the innate immune system.
• The term is used in medical, biological, and hematological contexts to classify and discuss specific white blood cells.
• It is typically used as a countable noun (e.g., , ).

Examples

• Noun:
  • A blood test revealed an elevated count of granulocytes, indicating a possible infection.
  • Neutrophils, eosinophils, and basophils are all types of granulocytes.
  • The pathologist examined the granulocyte under the microscope.

Advanced Usage

• Granulocyte colony-stimulating factor (G-CSF): A substance that stimulates the bone marrow to produce granulocytes.
  • The patient was given G-CSF to boost granulocyte production after chemotherapy.

Variants and Related Words

• Granulocytic (adjective): Of or relating to granulocytes.
  • The patient showed signs of a granulocytic response.
• Agranulocyte (noun): A white blood cell without granules in its cytoplasm (e.g., lymphocytes, monocytes). This is a contrasting term.
• Granulopoiesis (noun): The process of granulocyte formation in the bone marrow.

Synonyms

• Polymorphonuclear leukocyte (PMN): A common synonym, often referring specifically to neutrophils, the most abundant type of granulocyte.
• Granular leukocyte: A descriptive synonym.

Different Meanings

• The word "granulocyte" has a single, specific meaning in biology and medicine. It does not have common idiomatic or figurative uses.

Notes

• The granules in a granulocyte's cytoplasm are visible when stained and viewed under a microscope, which is key to its identification.
• Granulocytes are primarily involved in combating bacterial and fungal infections and in inflammatory responses.

Noun

1. a leukocyte that has granules in its cytoplasm