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also ce·lom (sē′ləm)
n. pl. coeloms or coe·lo·ma·ta (-lə-mä′tə, -măt′ə) also ce·loms or ce·loma·ta
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. Also called body cavity.

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

coe·lom′ic (sĭ-lŏm′ĭk, -lō′mĭk) adj.


(ˈsiːləʊm; -ləm) or


(Zoology) the body cavity of many multicellular animals, situated in the mesoderm and containing the digestive tract and other visceral organs
[C19: from Greek koilōma cavity, from koilos hollow; see coel-]
coelomic, celomic adj


(ˈsi ləm)

also coe•lome


n., pl. coe•loms, coe•lo•ma•ta (sɪˈloʊ mə tə) also coe•lomes.
the body cavity of higher metazoans, between the body wall and intestine, lined with a mesodermal epithelium.
[1875–80; < Greek koílōma cavity =koilō-, variant s. of koiloûn to hollow out, v. derivative of koîlos hollow + -ma n. suffix of result]
coe•lom•ic (sɪˈlɒm ɪk, -ˈloʊ mɪk) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.coelom - a cavity in the mesoderm of an embryo that gives rise in humans to the pleural cavity and pericardial cavity and peritoneal cavitycoelom - a cavity in the mesoderm of an embryo that gives rise in humans to the pleural cavity and pericardial cavity and peritoneal cavity
bodily cavity, cavum, cavity - (anatomy) a natural hollow or sinus within the body
References in periodicals archive ?
16) Both limitations often can be overcome by endoscopy, which provides focal magnification, illumination, and non- to minimally-invasive access to the gastrointestinal tract and coelom.
The Causby majority reasoned that "[t]he airplane is part of the modern environment of life" where ancient doctrines of airspace ownership such as ad coelom "ha[d] no place in the modern world.
Consequently, the developing intestines are herniated into the extra-embryonic coelom cavity (umbrical cord) at 6 weeks of gestation.
In both cuttlefish (Sepioidea) and squids (Teuthoidea), the oocytes develop from the branching of the genital strand (inside ovary), which almost extends to the posterior end of the mantle from the posterior end of the stomach, within the viscero-pericardial coelom (Harman et al.
Attempts to microchip sea stars revealed that the animals could transport tags within the coelom and clear them from their bodies (Olsen et al.
The Roman law maxim cujus est solum ejus est usque ad coelom, translated roughly to mean "whoever owns the soil owns to heaven above," established itself as the prevailing theory of airspace ownership under English and American common law thanks to endorsements from Lord Coke and Sir William Blackstone.
Scan also revealed an ill defined anterior abdominal wall defect through which abdominal contents herniated into extra embryonic coelom.
In the case of subsurface resource pools, dominion over the resource is assigned in proportion to the resource underlying the surface boundaries (thus recognizing the ad coelom aspect of surface ownership).
The RA was given on 7th, 8th & 9th of gestation, considered to be critical for developing kidney, since nephrogenic cords are reported to appear by 8thday and pronephric tubules and duct are observed to be suspended in the coelom by 10thday (Rugh, 1968).
The paired perirenal fat depot, the most internal of the selected fat depots, surrounded each kidney and extended caudally in the pelvic area of the coelom.