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[see-luh m] /ˈsi ləm/

noun, plural coeloms, coelomata
[si-loh-muh-tuh] /sɪˈloʊ mə tə/ (Show IPA). Zoology.
the body cavity of higher metazoans, between the body wall and intestine, lined with a mesodermal epithelium.
/ˈsiːləʊm; -ləm/
the body cavity of many multicellular animals, situated in the mesoderm and containing the digestive tract and other visceral organs

coelom coe·lom or ce·lom or coe·lome (sē’ləm)
The cavity formed by the splitting of the embryonic mesoderm into two layers; in mammals it then forms into the peritoneal, pleural, and pericardial cavities.
The body cavity that forms from the mesoderm during the embryonic development of more complex animals. The coelom suspends the gut in fluid in the middle of the body, protecting it from gravity and allowing great increases in body size. The presence or absence of a coelom is important for the classification of animal phyla. See more at deuterostome, protostome.


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    [see-luh-stat] /ˈsi ləˌstæt/ noun, Astronomy. 1. an apparatus consisting of a mirror driven by clockwork, used to enable a fixed telescope to keep the same area of sky in its field of view by compensating for the apparent rotation of the celestial sphere. /ˈsiːləˌstæt/ noun 1. an astronomical instrument consisting of a plane mirror mounted […]

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