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Wiktionary
information superhighway

n. (context dated computing English) The Internet and all other computer networks in the 1990s

WordNet
information superhighway

n. an extensive electronic network (such as the internet) used for the rapid transfer of sound and video and graphics in digital form [syn: superhighway]

Wikipedia
Information superhighway

The information superhighway or infobahn was a popular term used through the 1990s to refer to digital communication systems and the Internet telecommunications network. It is associated with United States Senator and later Vice-President Al Gore.