electrocardiograph

noun

elec·​tro·​car·​dio·​graph i-ˌlek-trō-ˈkär-dē-ə-ˌgraf How to pronounce electrocardiograph (audio)
: an instrument for recording the changes of electrical potential occurring during the heartbeat used especially in diagnosing abnormalities of heart action
electrocardiographic adjective
electrocardiographically adverb
electrocardiography noun

Examples of electrocardiograph in a Sentence

Recent Examples on the Web
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Before the Mingograph, electrocardiograph machines relied on a writing stylus to trace the waveform on a moving roll of paper. IEEE Spectrum, 28 Aug. 2025 Doctors at the hospital gave Wirt various medications, used an electrocardiograph and other diagnostic and monitoring devices, and inserted stents into his arteries to improve blood flow to his heart. Arielle Zionts, Miami Herald, 30 May 2025 With the Apple Watch Series 4, Apple unveiled a full electrocardiograph feature to help monitor heart activity. Beth Mole, Ars Technica, 10 Sep. 2019 Some of the women had to interrupt their cycling test at submaximal workload, before being pushed to maximal capacity, mainly due to changes seen on an electrocardiograph or due to high blood pressure. Jacqueline Howard, CNN, 14 Mar. 2018 Why does the sequence of numbers in the above chart resemble the characteristic spiky, periodic pulsations of an electrocardiograph? Quanta Magazine, 25 Nov. 2015

Word History

First Known Use

1910, in the meaning defined above

Time Traveler
The first known use of electrocardiograph was in 1910

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Cite this Entry

“Electrocardiograph.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electrocardiograph. Accessed 9 Sep. 2025.

Medical Definition

electrocardiograph

noun
elec·​tro·​car·​dio·​graph -ˌgraf How to pronounce electrocardiograph (audio)
: an instrument for recording the changes of electrical potential occurring during the heartbeat used especially in diagnosing abnormalities of heart action
electrocardiographic adjective
electrocardiographically adverb
electrocardiography noun
plural electrocardiographies

More from Merriam-Webster on electrocardiograph

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