heartbeat

noun

heart·​beat ˈhärt-ˌbēt How to pronounce heartbeat (audio)
Synonyms of heartbeatnext
1
: one complete pulsation of the heart
2
: the vital center or driving impulse
3
: a brief space of time : flash
used chiefly in the phrase in a heartbeat

Examples of heartbeat in a Sentence

The patient had a rapid heartbeat. I'd accept a job offer from that company in a heartbeat.
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.
According to the medical records, the former pro wrestler had a history of leukemia and atrial fibrillation, a common disorder that causes irregular heartbeats. Mekishana Pierre, Entertainment Weekly, 6 June 2026 Your Heart May Feel the Effects Drinking diet soda may increase your risk of irregular heartbeat. Cristina Mutchler, Verywell Health, 3 June 2026 All 80 are graduates of the Chiva Academy and know any other spa would hire them in a heartbeat, but most have been here for years. Condé Nast, Condé Nast Traveler, 2 June 2026 For Bourland and Turner, caring for these 328 heartbeats is a calling. Bo Evans, CBS News, 1 June 2026 See All Example Sentences for heartbeat

Word History

First Known Use

1821, in the meaning defined at sense 1

Time Traveler
The first known use of heartbeat was in 1821

Browse Nearby Words

Cite this Entry

“Heartbeat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heartbeat. Accessed 9 Jun. 2026.

Kids Definition

heartbeat

noun
heart·​beat ˈhärt-ˌbēt How to pronounce heartbeat (audio)
: a single contracting and expanding of the heart

Medical Definition

heartbeat

noun
heart·​beat ˈhärt-ˌbēt How to pronounce heartbeat (audio)
: one complete pulsation of the heart

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