Noun
natural function (plural natural functions)
(mathematics) An ordinary trigonometric function
The daimonic is any natural function which has the power to take over the whole person. Sex and eros, anger and rage, and the craving for power are examples. The daimonic can be either creative or destructive and is normally both. Rollo May
The frantic life of today has swept up women to the point where... they feel that there is no time for this vital natural function.(breastfeeding) I have many duties and obligations of state along with my husband, but my family comes first. Grace Kelly
Sex is a natural function. You can't make it happen, but you can teach people to let it happen. William Masters