A WAN (wide area network) is a geographically dispersed telecommunications network and the term distinguishes a broader telecommunication structure from a local area network (LAN). A wide area network may be privately owned or rented, but the term usually connotes the inclusion of public (shared user) networks. An intermediate form of network in terms of geography is a metropolitan area network (MAN).
Sources: George McDaniel, IBM Dictionary of Computing, Tenth Edition, (1994).
Bernhard E. Keiser and Eugene Strange, Digital Telephony and Network Integration, Van Nostrand, (1995)
Last update: November 22, 1999