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Dictionary

pro•neph•ros

Pronunciation: (prō-nef'ros, -rus), [key]
—n.,
—pl. -roiPronunciation: (-roi), [key] -raPronunciation: (-ru). [key] Embryol.
one of the three embryonic excretory organs of vertebrates, which becomes the functional kidney of certain primitive fishes. Cf. mesonephros, metanephros.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

prone

prone pressure method

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