natural childbirth [L, natura, nature; AS, cild, child; ME, bwith, birth] , labor and parturition accomplished by a mother with little or no medical intervention. It is generally considered the optimal way of giving birth and being born, safest for the baby and most satisfying for the mother. Prerequisites include normal gestation, an adequate birth canal, strong maternal motivation, physical and emotional preparation, and constant and intensive support of the mother during labor and birth. See also Lamaze method.