Cardiology
noun /ˌkɑːr.diˈɒl.ə.dʒi/ — The branch of medicine concerned with the heart.
Definition
The medical specialty dealing with the heart, its function, and its diseases — including coronary artery disease, arrhythmia, heart failure, and structural abnormalities.
Beyond the definition
The heart is both organ and metaphor — cardiology attends to the literal one, but the two are never entirely separate. Every heart, studied carefully enough, has a story.
Origin & history
From Greek 'kardia' (heart) + 'logos' (study). Cardiology as a distinct specialty developed in the 20th century as diagnostic tools made the heart visible and readable.
Example sentences
Illustrative sentences for learning, not verified community posts or sourced quotations.
The cardiologist listened for three minutes before she spoke — a thoroughness that itself communicated something.
Cardiology has transformed since the 1950s: conditions that were universally fatal are now managed for decades.
He had gone to cardiology for his heart, but what occupied him was the question of what love was, chemically speaking.
How to use it
This entry uses a noun. Follow the examples for articles and singular or plural forms; not every noun takes “a” or “an.”
Choose “Cardiology” when the meaning fits your context: The medical specialty dealing with the heart, its function, and its diseases — including coronary artery disease, arrhythmia, heart failure, and structural abnormalities.
Synonyms
heart medicine, cardiac medicine
Related words
Cardiology vs vascular surgery
Cardiology focuses specifically on the heart and its electrical and muscular functions. Vascular surgery treats disorders of the circulatory system, including veins and arteries outside of the heart.
Word in the Wild
See how this word appears in life, language and stories.
Illustrative sentences and imagined stories for learning — not verified sightings, interviews, or sourced quotations.
Fictional scene
Heart Model Clinical Study

A clinician uses a stethoscope on a patient while an anatomical heart model sits on the table.
The inclusion of an anatomical heart model within a clinical setting points specifically to the study and treatment of cardiac function, distinguishing this from general clinical observation.
Image credit: Wordspun · AI-generated conceptual illustration
Questions about this word
What does "Cardiology" mean?
Cardiology is noun meaning: The branch of medicine concerned with the heart.. The medical specialty dealing with the heart, its function, and its diseases — including coronary artery disease, arrhythmia, heart failure, and structural abnormalities.
Where does the word "Cardiology" come from?
From Greek 'kardia' (heart) + 'logos' (study). Cardiology as a distinct specialty developed in the 20th century as diagnostic tools made the heart visible and readable.