Umbilical cord. (a) (Anat.) The cord which connects the fetus with the
placenta, and contains the arteries and the vein through which blood
circulates between the fetus and the placenta; the navel-string. (b)
(Bot.) The little stem by which the seeds are attached to the placenta;
— called also funicular cord. — Umbilical hernia (Med.), hernia of the
bowels at the umbilicus. — Umbilical point (Geom.), an umbilicus. See
Umbilicus, 5. — Umbilical region (Anat.), the middle region of the
abdomen, bounded above by the epigastric region, below by the
hypogastric region, and on the sides by the lumbar regions. — Umbilical
vesicle (Anat.), a saccular appendage of the developing embryo,
containing the nutritive and unsegmented part of the ovum; the yolk
sac. See Illust. in Appendix.
{ Um*bil"i*cate (?), Um*bil"i*ca`ted (?), } a. [L. umbilicatus. See
Umbilic.] (a) Depressed in the middle, like a navel, as a flower,
fruit, or leaf; navel-shaped; having an umbilicus; as, an umbilicated
smallpox vesicle. (b) (Bot.) Supported by a stalk at the central point.
Um*bil"i*ca"tion (?), n. A slight, navel-like depression, or dimpling,
of the center of a rounded body; as, the umbilication of a smallpox
vesicle; also, the condition of being umbilicated.
||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.