Um*bil"ic*al (?), a. [Cf. F. ombilical. See Umbilic, n.]
Of or pertaining to an umbilicus, or umbilical cord; umbilic.
Pertaining to the center; central.
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.
© Webster 1913.