circulatory system


Definition of circulatory system

: 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 Below their feet, an ingenious network of pipes, chutes and conveyer belts make up the blood circulatory system. Dieynaba Young, Smithsonian Magazine, 18 June 2021 Any chemicals floating around in the circulatory system can emerge in sweat—the good stuff like glucose and hormones and the unwelcome stuff like heavy metals and urea. Sarah Everts, WSJ, 17 July 2021 Cardiovascular symptoms include low blood pressure, fainting and ultimately failure of the circulatory system. Dr. Keith Roach, oregonlive, 21 June 2021 The world contains Grisha that can control fire, wind and even the human circulatory system, but no one has ever seen a sun summoner. Paul Tassi, Forbes, 5 May 2021 Internally, insects differ from vertebrates in having an open circulatory system—blood simply perfuses their organs and oxygen is transported not via specialized blood cells but by a vast network of tubules connected directly to the outside air. David P. Barash, WSJ, 8 Apr. 2021 Loops in the Brain With their new tools for mapping the brain’s vasculature, Kleinfeld’s team plans to explore how the cerebral circulatory system can vary in rodents with specific mutations, or perhaps in other species. Emily Singer, Scientific American, 20 Aug. 2013 With her circulatory system failing, the ECMO machine was choking without enough blood to run through the pump. Thomas Curwen, Los Angeles Times, 12 Mar. 2021 The human circulatory system is housed within a body that is constantly adjusting its configuration in space. Joshua Rothman, The New Yorker, 1 Mar. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'circulatory system.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of circulatory system

1862, in the meaning defined above

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Time Traveler for circulatory system

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The first known use of circulatory system was in 1862

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Dictionary Entries Near circulatory system


circulatory system

circulus in definiendo

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Statistics for circulatory system

Last Updated

10 Sep 2021

Cite this Entry

“Circulatory system.” Dictionary, Merriam-Webster, Accessed 16 Sep. 2021.

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More Definitions for circulatory system

circulatory system


Kids Definition of circulatory system

: the system of the body that circulates blood and lymph and includes the heart and blood vessels

circulatory system


Medical Definition of circulatory system

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

More from Merriam-Webster on circulatory system

Britannica English: Translation of circulatory system for Arabic Speakers Encyclopedia article about circulatory system


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