cardiology

1 of 2

noun (1)

car·​di·​ol·​o·​gy ˌkär-dē-ˈä-lə-jē 

: the study of the heart and its action and diseases

cardiological

ˌkär-dē-ə-ˈlä-ji-kəl 

adjective

cardiologist

ˌkär-dē-ˈä-lə-jist 

noun

cardiologist

2 of 2

noun (2)

car·​di·​ol·​o·​gist ˌkär-dē-ˈä-lə-jist 

plural -s

: a specialist in cardiology

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

Noun (1)

a doctor who specializes in cardiology

Recent Examples on the Web

Noun

Scripps La Jolla is ranked 16th in diabetes and endocrinology, 32nd in cardiology and vascular surgery, and 36th in obstetrics and gynecology. — Paul Sisson, San Diego Union-Tribune, 4 Aug. 2026

Saint Luke’s Hospital of Kansas City Saint Luke’s is the 47th best hospital for cardiology, heart and vascular surgery. — Rashad Alexander august 4, Kansas City Star, 4 Aug. 2026

For example, clinicians choosing an anticoagulant for a patient with atrial fibrillation and stage three kidney disease often need to consult separate cardiology and nephrology guidelines, since the two aren’t typically integrated. — Garth Friesen, Forbes.com, 25 July 2026

There was some weakness on the medical-device side, specifically within cardiology. — Jim Cramer, CNBC, 15 July 2026

Word History

Etymology

Noun (1)

International Scientific Vocabulary

First Known Use

Noun (1)

1837, in the meaning defined above

Rhymes for cardiology

• anthology
• apology
• astrology
• biology
• christology
• chronology
• conchology
• cosmology
• cryptology
• cytology
• doxology
• ecology

Medical Definition

cardiology

noun

car·​di·​ol·​o·​gy ˌkärd-ē-ˈäl-ə-jē 

plural cardiologies

: the study of the heart and its action and diseases

cardiological

-ē-ə-ˈläj-i-kəl 

adjective

cardiologist

-ē-ˈäl-ə-jəst 

noun