/ Dictionary / Index F fontanel: Meaning and Definition of Find definitions for: fon•ta•nel Pronunciation: (fon"tn-el'), [key] — n. Anat. one of the spaces, covered by membrane, between the bones of the fetal or young skull. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fontanel (Thesaurus) Fontana fontange Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language