1
a
: of, relating to, situated near, or acting on the heart
b
: of or relating to the cardia of the stomach
2
: of, relating to, or affected with heart disease
cardiac patients

cardiac

2 of 2

noun

: a person with heart disease

Examples of cardiac in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
Simpson was diagnosed with arrhythmogenic right ventricular cardiomyopathy, a rare heart condition that can cause irregular heartbeats and sudden cardiac death in seemingly healthy individuals, per John Hopkins Medicine. Raven Brunner, PEOPLE, 20 Aug. 2026 Scores of 1 to 100 indicate mild plaque, 100 to 300 points to moderate buildup, and anything above 300 signals severe coronary calcification and a much higher risk of a cardiac event. Hanna Wickes, Kansas City Star, 20 Aug. 2026
Noun
That causes cardiac, metabolic, and other downstream health effects. Jeffrey Kluger, Time, 5 Mar. 2026 Through seven surgeries and countless complications, the experience showed me what true resilience is and reminded me that the impossible is possible (shoutout to the MGH cardiac ICU and entire cardiac team). Dalton Ross, Entertainment Weekly, 28 Jan. 2026 See All Example Sentences for cardiac

Word History

Etymology

Adjective

Latin cardiacus, from Greek kardiakos, from kardia

First Known Use

Adjective

14th century, in the meaning defined at sense 1a

Noun

1896, in the meaning defined above

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

Browse Nearby Words

Cite this Entry

“Cardiac.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cardiac. Accessed 22 Aug. 2026.

Kids Definition

cardiac

adjective
car·​di·​ac
ˈkärd-ē-ˌak
: of, relating to, situated near, or acting on the heart

Medical Definition

cardiac

1 of 2 adjective
1
a
: of, relating to, situated near, or acting on the heart
b
: of or relating to the cardia of the stomach
2
: of, relating to, or affected with heart disease

cardiac

2 of 2 noun
: an individual with heart disease

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