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.
McKenzie Milton was the heartbeat of the Knights’ undefeated 2017 season and, after injuries derailed his playing career, transitioned to the sideline. Edgar Thompson, The Orlando Sentinel, 2 May 2026 The high-tech device can bring a patient with no heartbeat back to life. Ricky Sayer, CBS News, 1 May 2026 While many music artists find success, only a rare few become the heartbeat of a generation. Encyclopedia Britannica, 1 May 2026 And soon after that physical, the lean, 6-foot-4 baseball and basketball player couldn’t walk upstairs without a racing heartbeat and dizziness. Tom Mulherin, Boston Herald, 1 May 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 5 May. 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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