Um‐bil″ic‐al (?), a. [Cf. F. ombilical. See Umbilic, n.] 1. (Anat.) Of or pertaining to an umbilicus, or umbilical cord; umbilic.
2. Pertaining to the center; central. DeFoe.
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.