||Um`bi*li"cus (?), n. [L. See
Umbilic.] 1. (Anat.) 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.
2. (Gr. & Rom. Antiq.) An ornamented or
painted ball or boss fastened at each end of the stick on which manuscripts
were rolled. Dr. W. Smith.
3. (Bot.) The hilum.
4. (Zoöl.) (a) A
depression or opening in the center of the base of many spiral
shells. (b) Either one of the two apertures in
the calamus of a feather.
5. (Geom.) (a) One of foci
of an ellipse, or other curve. [Obs.] (b) 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.
||Um`bi*li"cus (?), n. [L. See
Umbilic.] 1. (Anat.) 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.
2. (Gr. & Rom. Antiq.) An ornamented or
painted ball or boss fastened at each end of the stick on which manuscripts
were rolled. Dr. W. Smith.
3. (Bot.) The hilum.
4. (Zoöl.) (a) A
depression or opening in the center of the base of many spiral
shells. (b) Either one of the two apertures in
the calamus of a feather.
5. (Geom.) (a) One of foci
of an ellipse, or other curve. [Obs.] (b) 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.
