from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The bodily system consisting of the heart, blood vessels, and blood that circulates blood throughout the body, delivers nutrients and other essential materials to cells, and removes waste products. Also called cardiovascular system.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The parts of a animal body comprising the heart, veins, capillaries and arteries.
- n. The parts of a machine responsible for the circulation of some fluid.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the organs and tissues involved in circulating blood and lymph through the body
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