Heartbeat and Systole

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Heartbeat noun - A very small space of time.

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Systole and heartbeat are semantically related. In some cases you can replace term "Systole" with "Heartbeat", this nouns are similar.

Systole noun - The contraction of the chambers of the heart (especially the ventricles) to drive blood into the aorta and pulmonary artery.

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Heartbeat and systole are semantically related. You can use "Heartbeat" instead a noun "Systole".

The technical term for a "flatline" is asystole ("a-" for lacking, "systole" for the contraction cycle of a heartbeat).

Source: Flatline

Cite this Source

Systole and Heartbeat. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/heartbeat/systole

Heartbeat & Systole. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/heartbeat/systole>.

Systole or Heartbeat. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/heartbeat/systole.

Google Ngram Viewer shows how "heartbeat" and "systole" have occurred on timeline