Dictionary![]() ![]() pub'lic util'ity1. a business enterprise, as a public-service corporation, performing an essential public service and regulated by the federal, state, or local government. Cf. utility (def. 3). 2. Usually, public utilities. stocks or bonds of public-utility companies, excluding railroads. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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