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nephridial

Variant of nephridium

noun pl. nephridia

  1. a waste-discharging tubule with an external excretory pore, found in many invertebrates, as in worms, mollusks, etc.
  2. any of the excretory tubules of the pronephros of a vertebrate embryo

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Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.

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