FONTANEL

FONTANELLE angles of the parietal bones meet the two unmiited halves of the frontal. Gerdy's f., sagittal f. mas'toid f., posterolateral f., an interval on either side between the adjacent margins of the parietal, occipital, and mastoid portion of the temporal bones, occip'ital f., posterior f., a triangxilar interval at the imion of the lambdoid and sagittal sutures, where the posterior superior angles of the parietal bones meet the occipital. poste'rior f., occipital f. posterolat'eral f,, mastoid f. sag'ittal f., an occasional fontanel-like defect in the sagittal suture in the newborn. sphenoid'al f., anterolateral f., an irregularly shaped interval on either side, where the frontal, parietal, squamous portion of the temporal, and greater wing of the sphenoid bones meet.