(1):
(n.) Adaptation to satisfy the desires or wants; intrinsic value. See Note under Value, 2.
(2):
(n.) Happiness; the greatest good, or happiness, of the greatest number, - the foundation of utilitarianism.
(3):
(n.) The quality or state of being useful; usefulness; production of good; profitableness to some valuable end; as, the utility of manure upon land; the utility of the sciences; the utility of medicines.