asthma

noun

: a chronic lung disorder that is marked by recurring episodes of airway obstruction (as from bronchospasm) manifested by labored breathing accompanied especially by wheezing and coughing and by a sense of constriction in the chest, and that is triggered by hyperreactivity to various stimuli (such as allergens or rapid change in air temperature)
asthmatic adjective or noun

Examples of asthma in a Sentence

Recent Examples on the Web
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Since then, Nichols' group has run numerous experiments in animal models of disease including asthma, arthritis, and cardiovascular disease, but the field has needed to test whether these protective effects hold up in humans. — Will Stone, NPR, 21 Oct. 2026 According to the Cleveland Clinic, among the dangers of vaping are addiction to nicotine, asthma, cancer, lung scarring, coughing, shortness of breath and a dry/irritated mouth and throat. — Gil Kaufman, Billboard, 19 Oct. 2026 Symptoms include wheezing, shortness of breath, chest tightness and coughing, and while the vast majority of asthma attacks can be managed with treatment, a severe attack can prove fatal through asphyxiation and respiratory failure. — Greg Evans, Deadline, 17 Oct. 2026 In February 2025, more than a year before her death, Aurora was taken to an emergency room by a relative after experiencing asthma symptoms, wheezing and difficulty breathing, according to prosecutors. — Michael Sinkewicz, FOXNews.com, 15 Oct. 2026 See All Example Sentences for asthma

Word History

Etymology

Middle English asma, borrowed from Medieval Latin asma, asthma, borrowed from Greek ásthma "panting, shortness of breath, asthma (as a medical condition)," of uncertain origin

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of asthma was in the 14th century

Browse Nearby Words

Cite this Entry

“Asthma.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/asthma. Accessed 25 Oct. 2026.

Kids Definition

: a condition that is marked by difficulty in breathing with wheezing, a feeling of tightness in the chest, and coughing

Medical Definition

: a chronic lung disorder that is marked by recurring episodes of airway obstruction (as from bronchospasm) manifested by labored breathing accompanied especially by wheezing and coughing and by a sense of constriction in the chest, and that is triggered by hyperreactivity to various stimuli (as allergens or rapid change in air temperature)

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