asthma

American  

[az-muh, as-] / ˈæz mə, ˈæs- /

noun

1. Pathology. a paroxysmal, often allergic disorder of respiration, characterized by bronchospasm, wheezing, and difficulty in expiration, often accompanied by coughing and a feeling of constriction in the chest.

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asthma British  

/ ˈæsmə /

noun

1. a respiratory disorder, often of allergic origin, characterized by difficulty in breathing, wheezing, and a sense of constriction in the chest

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asthma Scientific  

/ ăz′mə /

1. A common inflammatory disease of the lungs characterized by episodic airway obstruction caused by extensive narrowing of the bronchi and bronchioles. The narrowing is caused by spasm of smooth muscle, edema of the mucosa, and the presence of mucus in the airway resulting from an immunologic reaction that can be induced by allergies, irritants, infection, stress, and other factors in a genetically predisposed individual. Common symptoms of asthma include wheezing, coughing, and shortness of breath.

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asthma Cultural  

1. A chronic disease of the respiratory system, characterized by sudden, recurring attacks of difficult breathing, wheezing, and coughing. During an attack, the bronchial tubes go into spasms, becoming narrower and less able to move air into the lungs. Various substances to which the sufferer has an allergy, such as animal hair, dust, pollen, or certain foods, can trigger an attack.

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Etymology

Origin of asthma

First recorded in 1350–1400; Middle English, from Greek: “a panting,” akin to aázein “to breathe hard”; replacing Middle English asma, from Medieval Latin, from Greek ásthma

Explanation

Asthma is a respiratory condition that involves allergies and your lungs: people with asthma have trouble breathing at times. Asthma is a very common disorder that makes breathing difficult. An allergic reaction, too much exercise, or just being stressed out can bring on an asthma attack. When someone has an asthma attack, it's very hard for them to get a good breath of air. Fortunately, asthma is not usually a life-threatening disease, and people who are asthmatic are fine most of the time.

Example Sentences

"Particle pollution can get deep into the lungs and cause serious health problems such as asthma attacks, heart and lung disease symptoms, and increased risk of lung infections," the National Weather Service warned.

From BBC • Apr. 11, 2026

Last June, the South Coast Air Quality Management District received more than 20,000 comments opposing a pair of clean air rules that would have prevented 2,500 premature deaths and 10,000 new cases of asthma.

From Los Angeles Times • Apr. 1, 2026

Novartis said the drug offers a differentiated mechanism that, if confirmed clinically, could support earlier symptom relief, stronger disease control and more convenient dosing across food allergy, hives, allergic asthma and other diseases.

From The Wall Street Journal • Mar. 27, 2026

Her neighbour, 45-year-old Munni Bai, who has asthma, had switched to using an electric cooker as well as biogas from cow dung, to help her breathing.

From Barron's • Mar. 24, 2026

When An Yi had an asthma attack, Grandma often had to take her to the hospital for oxygen.

From "Red Scarf Girl: A Memoir of the Cultural Revolution" by Ji-li Jiang