/ Dictionary / Index N nephrostome: Meaning and Definition of Find definitions for: neph•ro•stome Pronunciation: (nef'ru-stōm"), [key] — n. the ciliated opening of a nephridium into the coelom. 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. nephrosis nephrotomy Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language