✨📕 The NEWThe NEW Collegiate Dictionary, 12th Edition Over 5,000 words added — Buy Now! Collegiate DictionaryBuy Now!

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
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.
The symptoms of heart failure—shortness of breath, fatigue, and foot or leg swelling—are vague and can signal a variety of illnesses. Rachael Zimlich, Verywell Health, 25 Nov. 2025 But a recent study linking chronic melatonin use to heart failure has parents concerned. Cara Lynn Shultz, PEOPLE, 24 Nov. 2025 While no autopsy was ever performed, Morrison’s official cause of death was deemed heart failure by French officials. Stephanie Nolasco, FOXNews.com, 23 Nov. 2025 People who took melatonin for at least a year were also more than three times as likely to be hospitalized for heart failure and nearly twice as likely to die from any cause compared with those who had no medical record of taking melatonin. Lori Youmshajekian, Scientific American, 19 Nov. 2025 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 30 Nov. 2025.

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

More from Merriam-Webster on heart failure

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!