'Public-service corporation' definitions:

Definition of 'public-service corporation'

(from WordNet)
noun
A company that performs a public service; subject to government regulation [syn: utility, public utility, public utility company, public-service corporation]

Definition of 'Public-service corporation'

From: GCIDE
  • Public-service corporation \Public-service corporation\ or sometimes Quasi-public corporation \Quasi-public corporation\ A corporation, such as a railroad company, lighting company, water company, etc., organized or chartered to follow a public calling or to render services more or less essential to the general public convenience or safety. [Webster 1913 Suppl.]