/ Dictionary / Index A atopy: Meaning and Definition of Find definitions for: at•o•py Pronunciation: (at'u-pē), [key] — n. an allergy, involving an inherited immunoglobulin of the IgE type, that predisposes a person to certain allergic responses, as atopic dermatitis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: atopy (Thesaurus) atopic -ator Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language