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coelom.

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.

6 characters2 syllables approx.English language

Meaning & usage

noun/ˈsiːləm/UK, US
  1. 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.

Where this word comes from

From international scientific vocabulary, from New Latin, from Ancient Greek κοίλωμα (koílōma, “hollow, cavity”). Cognate with coeliac.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.