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The Collaborative International Dictionary of English v.0.48 (gcide)

Fontanel \Fon"ta*nel`\, n. [F. fontanelle, prop., a little
fountain, fr. fontaine fountain. See {Fountain}.]
1. (Med.) An issue or artificial ulcer for the discharge of
humors from the body.[Obs.] --Wiseman.
[1913 Webster]

2. (Anat.) One of the membranous intervals between the
incompleted angles of the parietal and neighboring bones
of a fetal or young skull; -- so called because it
exhibits a rhythmical pulsation.
[1913 Webster]

Note: In the human fetus there are six fontanels, of which
the anterior, or bregmatic, situated at the junction of
the coronal and sagittal sutures, is much the largest,
and remains open a considerable time after birth.
[1913 Webster]

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