Eosinophils

Definition of eosinophil

eosinophil

(EE-oh-SIH-noh-FIL)
A type of immune cell that has granules (small particles) with enzymes that are released during infections, allergic reactions, and asthma. An eosinophil is a type of white blood cell and a type of granulocyte.

Source: NCI Dictionary of Cancer Terms