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NEPHRIDIAL

 - 4 dictionary results

ne⋅phrid⋅i⋅um

  [nuh-frid-ee-uhm]
Use NEPHRIDIAL in a Sentence
–noun, plural -phrid⋅i⋅a  [-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; < NL; see nephr-, -idium

Related forms:
ne⋅phrid⋅i⋅al, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ne·phrid·i·um   (nə-frĭd'ē-əm)   
n.   pl. ne·phrid·i·a (-ē-ə)

  1. A tubular excretory organ in many invertebrates, such as mollusks and earthworms.

  2. The excretory organ of a vertebrate embryo from which the kidney develops.


[nephr(o)- + Latin -idium, diminutive suff. (from Greek -idion).]
ne·phrid'i·al adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: ne·phrid·i·um
Pronunciation: ni-'frid-E-&m
Function: noun
Inflected Form: plural ne·phrid·ia /-E-&/
: an excretory organ that is characteristic of various coelomate invertebrates (as annelid worms, mollusks, brachiopods, and some arthropods), occurs paired in eachbody segment or as a single pair serving the whole body, typically consists of a tube opening at one end into the coelom and discharging at the other end on the exterior of the body, is oftenlengthened and convoluted, and has glandular walls —ne·phrid·i·al /-E-&l/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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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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