heartbeat

noun

heart·​beat ˈhärt-ˌbēt 

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

Synonyms

• minute
• second
• moment

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

Spanning over 30 years and recognized as the most influential week in Latin music, the event will once again celebrate the heartbeat of Latin music and culture with four days of panels, marquee conversations, roundtables, showcases, networking and activations. —Jessica Roiz, Billboard, 11 Oct. 2025

The rotation has been the heartbeat of this window of contention. —Jayson Stark, New York Times, 10 Oct. 2025

The sounds of a new birth, with the new heartbeat of Balenciaga sent to us on our own cassette players, was so creative and wonderful. —Rhonda Richford, Footwear News, 8 Oct. 2025

Magnesium helps regulate blood pressure, maintain a steady heartbeat, and keep blood vessels functioning properly. —Lindsay Curtis, Verywell Health, 6 Oct. 2025

Word History

First Known Use

1850, in the meaning defined at sense 1

Phrases Containing heartbeat

• heartbeat law
• in a heartbeat

Rhymes for heartbeat

• amit
• athlete
• backseat
• blackfeet
• broadsheet
• browbeat
• buckwheat
• compete
• compleat
• complete
• conceit
• concrete

Kids Definition

heartbeat

noun

heart·​beat ˈhärt-ˌbēt 

: a single contracting and expanding of the heart

Medical Definition

heartbeat

noun

heart·​beat ˈhärt-ˌbēt 

: one complete pulsation of the heart