circulatory system

noun

: the system of blood, blood vessels, lymphatics, and heart concerned with the circulation of the blood and lymph

Examples of circulatory system in a Sentence

Recent Examples on the Web
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Diseases affecting the heart and circulatory system killed between 27,000 and 40,000 Americans per year in this time frame, according to NCHS. Melissa Rudy, FOXNews.com, 3 July 2026 The lymphatic system collects that fluid from your tissues and routes it through a network of vessels, nodes and organs running parallel to the circulatory system throughout nearly the entire body, per StatPearls. Allison Palmer, Charlotte Observer, 29 June 2026 Circulatory cooling vests Similar to a human’s circulatory system, these vests have a system of tubes placed all over the vest. Bestreviews, Chicago Tribune, 17 June 2026 The venom simultaneously targets the nervous system, circulatory system and muscular system. Scott Travers, Forbes.com, 12 June 2026 See All Example Sentences for circulatory system

Word History

First Known Use

1862, in the meaning defined above

Time Traveler
The first known use of circulatory system was in 1862

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Cite this Entry

“Circulatory system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/circulatory%20system. Accessed 5 Jul. 2026.

Kids Definition

circulatory system

noun
: the bodily system of blood, vessels, and heart concerned with the circulation of the blood and lymph

Medical Definition

circulatory system

noun
: the system of blood, blood vessels, lymphatics, and heart concerned with the circulation of the blood and lymph

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