Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The fluid-filled cavity within the body of most multicellular animals, except some invertebrates such as flatworms and cnidarians, that lies between the body wall and the digestive tract and is formed by the splitting of the embryonic mesoderm into two layers.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun zoology A fluid-filled cavity within the body of an animal. The digestive system is suspended within the cavity, which is lined by a tissue called the peritoneum.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a cavity in the mesoderm of an embryo that gives rise in humans to the pleural cavity and pericardial cavity and peritoneal cavity

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[German Koelom, from Greek koilōma, cavity, from koilos, hollow; see keuə- in Indo-European roots.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek κοίλωμα (koiloma, "hollow, cavity").

Examples

Comments

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  • Snails collect their metabolic wastes in the coelom - which has been reduced to a sac surrounding the heart.

    March 16, 2011

  • That's why love hurts frogapplause, for snails at least.

    March 16, 2011