Also found in: Medical.


(invertebrate zoology)
Either of a pair of ciliated excretory and reproductive channels passing from the coelom to the exterior in certain invertebrates, including annelids and mollusks.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



in animals, a duct through which the coelom communicates with the external environment. Coelomoducts develop from the embryo’s mesoderm. Their primary function is the removal of sexual waste products.

In the course of evolution, for example, in polychaete worms, the coelomoducts also acquired the excretory function. In vertebrates, groups of typical coelomoducts form the kidneys. Coelomoducts usually open into the coelom through ciliated infundibular passages.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.