car·di·ac
ˈkär-dē-ˌak 
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
: a person with heart disease
Examples of cardiac in a Sentence
Recent Examples on the Web
Rachel McRady, PEOPLE, 4 Feb. 2026
Air purifiers are most important for people with pre-existing respiratory and cardiac conditions, including allergies, asthma, obstructive sleep apnea, lung disease, and heart disease.
—Julia Ries Wexler, Health, 4 Feb. 2026
Dalton Ross, Entertainment Weekly, 28 Jan. 2026
Additionally, Trump's cardiac scan did not show abnormalities in the heart or major vessels, according to Barbabella, and his heart chambers were described as normal in size with no signs of inflammation or clotting.
—Mary Kekatos, ABC News, 1 Dec. 2025
See All Example Sentences for cardiac
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Adjective
The 911 call reporting Nancy as missing revealed that the mother of three has high blood pressure, a pacemaker and cardiac issues.
—Rachel McRady, PEOPLE, 4 Feb. 2026
Air purifiers are most important for people with pre-existing respiratory and cardiac conditions, including allergies, asthma, obstructive sleep apnea, lung disease, and heart disease.
—Julia Ries Wexler, Health, 4 Feb. 2026
Noun
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
Additionally, Trump's cardiac scan did not show abnormalities in the heart or major vessels, according to Barbabella, and his heart chambers were described as normal in size with no signs of inflammation or clotting.
—Mary Kekatos, ABC News, 1 Dec. 2025
See All Example Sentences for cardiac
Cite this Entry
“Cardiac.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cardiac. Accessed 14 Feb. 2026.
Copy CitationMedical Definition
cardiac
1 of 2 adjective
car·di·ac
ˈkärd-ē-ˌak
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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