Definition of "eosinophil" [eosinophil]

• A type of white blood cell found in vertebrate blood, containing cytoplasmic granules that are easily stained by eosin or other acid dyes. (noun)
• A microorganism, cell, or histological element easily stained by eosin or other acid dyes. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The granules stain deeply with eosin, and the cells are therefore often termed eosinophil corpuscles."
• ""Actually doctor, you don't need to go into too much detail, just spell 'eosinophil' for me if you would.""
• "A white blood cell called an eosinophil (ee-oh-sin-oh-fill) is one of the types of cells behind an allergic reaction."