Umbilicus
The depression, or mark, in the median line of the abdomen, which indicates the point where the umbilical cord separated from the fetus; the navel.
An ornamented or painted ball or boss fastened at each end of the stick on which manuscripts were rolled.
The hilum.
A depression or opening in the center of the base of many spiral shells.
Either one of the two apertures in the calamus of a feather.
One of foci of an ellipse, or other curve.
A point of a surface at which the curvatures of the normal sections are all equal to each other. A sphere may be osculatory to the surface in every direction at an umbilicus. Called also umbilic.
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Umbilicus Translations
umbilicus in German is Nabels
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