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.
Much like their youthful, emotional heartbeats, malls in the ’80s and ’90s bustled, becoming as quintessential to American culture as hot dogs and apple pie. Audrey Pachuta, Chicago Tribune, 9 May 2026 Lyme is more complex and varied and can cause symptoms ranging from fever and rash to facial paralysis, an irregular heartbeat and even arthritis. Mary Walrath-Holdridge, USA Today, 9 May 2026 When a family loses a loved one, the team fills the box with fingerprints, hair locks and heartbeat strips. Laura Berrios, AJC.com, 7 May 2026 Then the cycle repeats with every single heartbeat. Sara Hoffman, Verywell Health, 6 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 14 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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