Webster's Revised Unabridged Dictionary · 1913

Utilitarianism

Utilitarianism , noun

1.
The doctrine that the greatest happiness of the greatest number should be the end and aim of all social and political institutions. — Bentham
2.
The doctrine that virtue is founded in utility, or that virtue is defined and enforced by its tendency to promote the highest happiness of the universe. — J. S. Mill
3.
The doctrine that utility is the sole standard of morality, so that the rectitude of an action is determined by its usefulness.