Pronunciation: (rā'fē), [key]
—pl. -phaePronunciation: (-fē). [key]
1. Anat.a seamlike union between two parts or halves of an organ or the like.
a. (in certain ovules) a ridge connecting the hilum with the chalaza.
b. a median line or slot on a cell wall of a diatom.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.