nephridia

nephridium

[nuh-frid-ee-uhm]
noun, plural nephridia [nuh-frid-ee-uh] . Zoology.
the excretory organ of many invertebrates, consisting of a tubule with one end opening into the body cavity and the other opening into a pore at the body surface.

Origin:
1875–80; < Neo-Latin; see nephr-, -idium

nephridial, adjective
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World English Dictionary
nephridium (nɪˈfrɪdɪəm)
 
n , pl -ia
a simple excretory organ of many invertebrates, consisting of a tube through which waste products pass to the exterior
 
[C19: New Latin: little kidney]
 
ne'phridial
 
adj

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American Heritage
Medical Dictionary

nephridium ne·phrid·i·um (nə-frĭd'ē-əm)
n. pl. ne·phrid·i·a (-ē-ə)
The embryonic excretory organ from which the kidney develops.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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