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
Clayton Dalton, New Yorker, 18 Oct. 2025
Importantly, the treatment so far appears well tolerated, with no serious or cardiac side effects reported.
—New Atlas, 16 Oct. 2025
Tom Daykin, jsonline.com, 30 Sep. 2025
These cover advanced caregiving for cancer, palliative care, cardiac, dementia, lung, veterans' needs, and soon, pediatric care.
—Wes Kilgore, Forbes.com, 25 Aug. 2025
See All Example Sentences for cardiac
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Adjective
Low levels of phosphate and potassium in the blood can cause cardiac and respiratory arrest; low levels of thiamine can damage the brain.
—Clayton Dalton, New Yorker, 18 Oct. 2025
Importantly, the treatment so far appears well tolerated, with no serious or cardiac side effects reported.
—New Atlas, 16 Oct. 2025
Noun
The hospital's other services include enhanced cardiac, cancer, orthopedics and stroke care.
—Tom Daykin, jsonline.com, 30 Sep. 2025
These cover advanced caregiving for cancer, palliative care, cardiac, dementia, lung, veterans' needs, and soon, pediatric care.
—Wes Kilgore, Forbes.com, 25 Aug. 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 29 Oct. 2025.
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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