heart failure

noun

1
: a condition in which the heart is unable to pump blood at an adequate rate or in adequate volume
2
: cessation of heartbeat : death

Examples of heart failure in a Sentence

Recent Examples on the Web
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Another transport official died of supposedly acute heart failure the same day. — Jeffrey Sonnenfeld, Time, 22 Oct. 2026 People with heart failure may need to restrict fluids as recommended by a healthcare provider. — Megan Nunn, Verywell Health, 21 Oct. 2026 In addition to low blood oxygen levels and low blood pressure, a pulmonary embolism can affect the heart, causing a fast or irregular heart rate, right-sided heart failure or sudden cardiac arrest. — Jen Christensen, CNN Money, 20 Oct. 2026 To diagnose heart failure, doctors often check blood levels of a hormone called BNP, which the heart releases under strain. — Amiran Baduashvili, The Conversation, 12 Oct. 2026 See All Example Sentences for heart failure

Word History

First Known Use

1574, in the meaning defined at sense 1

Time Traveler
The first known use of heart failure was in 1574

Browse Nearby Words

Cite this Entry

“Heart failure.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heart%20failure. Accessed 26 Oct. 2026.

Medical Definition

heart failure

noun
1
: a condition in which the heart is unable to pump blood at an adequate rate or in adequate volume compare angina pectoris, congestive heart failure, coronary failure, heart attack
2
: cessation of heartbeat : death

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