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

Pathways are the biological equivalent of circulatory systems, neural circuits, or metabolic routes. —Scott Hutcheson, Forbes.com, 3 Sep. 2025

Yes, the Xenomorph circulatory system is filled with a lethal, extremely melty cocktail of sulphuric and hydrofluoric acid. —Richard Edwards, Space.com, 12 Aug. 2025

The study states that heterochronic parabiosis refers to a surgical procedure that joins an old and young animal by the circulatory system. —Maria Mocerino, Interesting Engineering, 11 Aug. 2025

In May, a 66-year-old Texas man was killed when a swarm of bees stung him enough times to cause his circulatory system to stop functioning properly. —Mary Walrath-Holdridge, USA Today, 10 July 2025

Word History

First Known Use

1862, in the meaning defined above

Rhymes for circulatory system

• cryptosystem
• ecosystem
• intersystem
• multisystem
• photosystem
• subsystem

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