1. a type of white blood cell that helps fight infection and inflammation, especially in allergic reactions and parasitic infections
Usage: medical/scientific term; also called an eosinophilic leukocyte

Examples

• The doctor ordered a blood test to check the patient's eosinophil count.
• High levels of eosinophils in the blood can indicate an allergic reaction.
• Eosinophils are produced in the bone marrow and released into the bloodstream.
• During a parasitic infection, the body typically increases eosinophil production.
• The lab technician identified eosinophils under the microscope by their pink-staining granules.