- Enter a word for the dictionary definition.
From The Collaborative International Dictionary of English v.0.48:
Utilitarianism \U*til`i*ta"ri*an*ism\, n. 1. The doctrine that the greatest happiness of the greatest number should be the end and aim of all social and political institutions. --Bentham. [1913 Webster] 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. [1913 Webster] 3. The doctrine that utility is the sole standard of morality, so that the rectitude of an action is determined by its usefulness. [1913 Webster]