ˈalə(r)jē, -ji, sometimes -ˌlərj-, -ˌlə̄j-, -ˌləij- noun
( -es )
Etymology: German allergie, from all- + -ergie -ergy
1. : altered bodily reactivity to an antigenic substance in response to a first exposure
an allergy to bee venom so severe that a second sting may be fatal
2. : exaggerated or pathological reaction marked by sneezing, respiratory embarrassment, itching and skin rashes, or other symptoms to substances (as germs, pollens, food, or drugs), situations (as mental or emotional excitement or exposure to sunlight), or physical states (as coldness) that are without comparable effect on the average individual
sneezing follows inhalation of pollens by persons having an allergy to them
allergies due to foods often cause hives
— compare hypersensitive
3. : medical practice concerned with the diagnosis and treatment of allergy
he has practiced allergy for 15 years
4. : a feeling of antipathy or repugnance
a reputation of having an allergy to books — R.J.Crohn