umbilical cord defined in 1951 yearumbilical cord - umbilical cord;
umbilical cord - Stalk projecting from ventral surface of embryo of placental mammals, connecting it to placenta. Consists mainly of the mesoderm and blood-vessels of allantois, containing also part or all of the cavities of yolk-sac and allantois. Cord is surrounded by amniotic cavity. Usually breaks or is broken through at birth.
near umbilical cord in Knolik
definition of word "umbilical cord" was readed 1254 times