Pronunciation: (i-pif'u-sis), [key]
—pl. -sesPronunciation: (-sēz"). [key] Anat.
1. a part or process of a bone separated from the main body of the bone by a layer of cartilage and subsequently uniting with the bone through further ossification.
2. See pineal gland.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.