coelomate

[see-luh-meyt, si-loh-mit]

adjective

1. having a coelom.

noun

1. a coelomate animal.

Word History and Origins

Origin of coelomate¹

First recorded in 1880–85; coelom + -ate ¹

Example Sentences

The coelom, an organ which is found in the so-called coelomate animals, and which in the adult is usually divided up more or less completely into three parts, namely, body-cavity, renal organs, generative glands, presents in different animals both these methods of development.

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The evolution of this cavity into a gut is foreshadowed in some Coelentera by the elliptical shape of the aperture, and by the development at its ends of a ciliated channel along which food is swept; we have only to suppose the approximation of the sides of the ellipse and their eventual fusion, to complete the transformation of the radially symmetrical Coelenterate into a bilaterally symmetrical Coelomate with mouth and anus at opposite ends of the long axis.

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The conception of the Dipleurula derives its chief weight from the fact that it is comparable to the early larval forms of other primitive coelomate animals, such as Balanoglossus, Phoronis, Chaetognatha, Brachiopoda and Bryozoa.

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Lamarck’s term Ann�lides, now used to denote a major phylum or division of coelomate invertebrate animals.

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