allergy

noun
al·​ler·​gy | \ ˈa-lər-jē How to pronounce allergy (audio) \
plural allergies

Definition of allergy

1 : altered bodily reactivity (such as hypersensitivity) to an antigen in response to a first exposure a bee venom allergy so severe that a second sting may be fatal
2 : exaggerated or pathological immunological reaction (as by sneezing, difficult breathing, itching, or skin rashes) to substances, situations, or physical states that are without comparable effect on the average individual
3 : medical practice concerned with allergies
4 : a feeling of antipathy or aversion

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Examples of allergy in a Sentence

Many people have some form of allergy. independent-minded people who seem to have an allergy to any control from the government

Recent Examples on the Web

The nasal decongestant, found in some allergy and cold medicines, can also be used to make crystal meth. New York Times, "Iraq Faces a New Adversary: Crystal Meth," 14 Sep. 2019 Gradual weight loss can signal many things, from hormone imbalances, allergies and dental problems to illnesses and cancer. chicagotribune.com, "Pet World: Ask vet for help with nutrition plan for cat who’s losing weight," 13 Sep. 2019 Sophie, naturally—was diagnosed with a shellfish allergy. Emily Matchar, Smithsonian, "Move Over Fake Meat, It’s Time for Veggie Seafood," 11 Sep. 2019 Add in the specter of food allergies — of your own kids or their friends — and the stakes can feel even higher. Becky Krystal, Houston Chronicle, "When it comes to food allergies, how to help your kids snack smarter," 10 Sep. 2019 As someone with a perfume allergy, my eyes practically started to water just reading that. Washington Post, "Hints From Heloise: Show grandparents some love," 7 Sep. 2019 Common conditions treated through eCare include: Cold and flu symptoms; skin conditions; seasonal allergies; urinary tract infections; lower back pain, minor burns, cuts, bumps and scrapes; and pink eye. Naseem S. Miller, orlandosentinel.com, "Hurricane Dorian: List of free telemedicine services for Floridians," 4 Sep. 2019 Mylan and Pfizer are still struggling with manufacturing issues for the EpiPen anti-allergy injector as the critical back-to-school season gets underway and a rival generic product hits the market. Bloomberg News, oregonlive, "What’s behind the persistent shortage of lifesaving EpiPens?," 23 Aug. 2019 The most common symptoms of Alpha-1 are shortness of breath, wheezing, chronic bronchitis and year-round allergies, according to the Alpha-1 Foundation. Fox News, "Arizona man tells of surviving rare liver disease, double-lung transplant," 15 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'allergy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of allergy

1908, in the meaning defined at sense 1

History and Etymology for allergy

borrowed from German Allergie "heightened reaction to an antigen to which an individual has been previously exposed," from all- all- + -ergie, in Energie energy, or directly from its source, Greek -ergeia, taken to mean "action, response"

Note: Term introduced, along with allergisch allergic and Allergen allergen, by the German physician Clemens Peter Freiherr von Pirquet (1874-1929) in "Allergie," Münchener medizinische Wochenschrift, 53. Jahrgang, Nr. 30 (July 24, 1906), pp. 1457-58.

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Statistics for allergy

Last Updated

18 Sep 2019

Look-up Popularity

Time Traveler for allergy

The first known use of allergy was in 1908

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More Definitions for allergy

allergy

noun

English Language Learners Definition of allergy

: a medical condition that causes someone to become sick after eating, touching, or breathing something that is harmless to most people

allergy

noun
al·​ler·​gy | \ ˈa-lər-jē How to pronounce allergy (audio) \
plural allergies

Kids Definition of allergy

: a condition in which a person is made sick by something that is harmless to most people

allergy

noun
al·​ler·​gy | \ ˈal-ər-jē How to pronounce allergy (audio) \
plural allergies

Medical Definition of allergy

1 : altered bodily reactivity (as hypersensitivity) to an antigen in response to a first exposure his bee-venom allergy may render a second sting fatal
2 : exaggerated or pathological reaction (as by sneezing, respiratory embarrassment, itching, or skin rashes) to substances, situations, or physical states that are without comparable effect on the average individual
3 : medical practice concerned with allergies

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