acoelomatous

acoelomate

[ey-see-luh-meyt, ey-see-loh-mit] Zoology.
adjective
1.
Also, acoelomatous [ey-see-lom-uh-tuhs, -loh-muh-] , acoelomous. having no coelum.
noun
2.
any organism that lacks a cavity between the body wall and the digestive tract, including the flatworms, nemertines, and sea anemones.

Origin:
1875–80; a-6 + coelomate

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