circulatory system

== English == === Etymology === From circulatory +‎ system. === Pronunciation === (Received Pronunciation) IPA(key): /ˌsɜːk(j)uːlətəɹi ˈsɪstəm/, /-tɹi-/ (General American) IPA(key): /ˌsɝkjələˌtɔɹi ˈsɪstəm/ Hyphenation: cir‧cu‧lat‧o‧ry sys‧tem === Noun === circulatory system (plural circulatory systems) (physiology) The parts of an animal body comprising the heart, blood vessels (arteries, veins, and capillaries), and blood, which circulate the blood around the body. [from mid 19th c.] Synonyms: (by some writers) cardiovascular system, (by some writers) vascular system, (loosely) circulation (technology) The parts of a machine responsible for the circulation of some fluid. ==== Usage notes ==== Some writers treat cardiovascular system and vascular system as synonymous with circulatory system. Others regard these terms as hyponyms. ==== Coordinate terms ==== lymphatic system nervous system respiratory system ==== Derived terms ==== closed circulatory system open circulatory system ==== Translations ==== ==== See also ==== Thesaurus:circulatory system collateral circulation pulmonary circulation systemic circulation === Further reading === circulatory system on Wikipedia.Wikipedia “circulatory system, n.”, in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present, reproduced from Stuart Berg Flexner, editor in chief, Random House Unabridged Dictionary, 2nd edition, New York, N.Y.: Random House, 1993, →ISBN.