car·​di·​ol·​o·​gy ˌkär-dē-ˈä-lə-jē How to pronounce cardiology (audio)
: the study of the heart and its action and diseases
cardiological adjective
cardiologist noun

Did you know?

The Heart of Cardiology

The root card- (closely related to cord) shows up in many heart-related words. Cardiologists frequently find themselves studying cardiograms, the charts of heart activity, made by machines called cardiographs. Heart attacks, and deaths caused by them, have both declined as a result of better medical emergency procedures, cholesterol-lowering drugs, and a decline in smoking. But the factors likely to actually improve heart health, such as better diets and more cardiovascular exercise (exercise, such as running, that improves the heart and blood vessels), haven't made any progress at all. So we should all be prepared to perform cardiopulmonary resuscitation (an emergency procedure done on someone whose heart has stopped, to get the heart and lungs working again).

Examples of cardiology in a Sentence

a doctor who specializes in cardiology
Recent Examples on the Web The anti-obesity medications that have been approved by the U.S. Food and Drug Administration (FDA) since 2010 have been of great interest to and a topic of ongoing debate in the cardiology community. David Snyder, Verywell Health, 30 Mar. 2024 After a residency in internal medicine, Kerr started a fellowship in cardiology in Buffalo. Phoebe Zerwick, New York Times, 12 Mar. 2024 As the sports cardiology director at the University of Colorado Anschutz Medical Campus, I’m often asked how much and what kind of exercise is necessary to get the benefits of exercise. William Cornwell, The Conversation, 21 Feb. 2024 Getting more Black doctors into cardiology Increasing the number of Black cardiologists has been the focus of major health organizations in recent years. Claretta Bellamy, NBC News, 19 Feb. 2024 Unlike staff at the cardiology office, Montañez’s specialist didn’t misgender her. Danielle McLean, USA TODAY, 25 Jan. 2024 Urgent care use has expanded rapidly in the last decade, becoming a imperfect catch-all for all kinds of services amid shortages across health care professions, ranging from primary care to cardiology, pulmonology and oncology and mental health. Binghui Huang, The Indianapolis Star, 4 Jan. 2024 Fewer but consistent numbers had challenges accessing surgery (13% and 15%, respectively), physical therapy or rehab (13% for both), or cardiology services (13% and 10%, respectively). Deb Gordon, Forbes, 22 Feb. 2024 That’s why doctors look to cholesterol levels to catch and treat cardiovascular problems early, said Dr. John Wilkins, an associate professor of cardiology and epidemiology at Northwestern University Feinberg School of Medicine. Knvul Sheikh, San Diego Union-Tribune, 13 Feb. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'cardiology.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


International Scientific Vocabulary

First Known Use

1837, in the meaning defined above

Time Traveler
The first known use of cardiology was in 1837

Dictionary Entries Near cardiology

Cite this Entry

“Cardiology.” Dictionary, Merriam-Webster, Accessed 24 Apr. 2024.

Medical Definition


car·​di·​ol·​o·​gy ˌkärd-ē-ˈäl-ə-jē How to pronounce cardiology (audio)
plural cardiologies
: the study of the heart and its action and diseases
cardiological adjective
cardiologist noun

More from Merriam-Webster on cardiology

Last Updated: - Updated example sentences
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