Biol. any structure, cell, etc. readily stainable with eosin; esp., the granular white blood cells that increase greatly in number in certain allergic and parasitic diseases
Origin of eosinophileosin + -o- + -phil
- A type of white blood cell found in vertebrate blood, containing cytoplasmic granules that are easily stained by eosin or other acid dyes.
- A microorganism, cell, or histological element easily stained by eosin or other acid dyes.
- e′o·sin′o·phil′, e′o·sin′o·phil′ic
- (cytology, immunology) A white blood cell responsible for combating infection by parasites in the body.