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Meaning of nephrostome

neph•ro•stome

Pronunciation: (nef'ru-stōm"), [key]
— n.
  1. the ciliated opening of a nephridium into the coelom.
  2. a similar opening from the coelom into a tubule of the embryonic kidney.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.