public-service corporation[pub′lik sʉr′vis]
public-service corporation definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a private corporation that supplies some essential commodity or service to the public, under governmental regulation
public-service corporation definition by American Heritage Dictionary
A corporation providing essential services, such as water or electricity, to the public.