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acronym from Advanced Research Projects Agency Network, set up in 1969 by a branch of the U.S. Department of Defense in partnership with four universities; acknowledged as "the world's first operational packet switching network" and predecessor of the Internet.

Online Etymology Dictionary, © 2010 Douglas Harper
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arpanet in Science
A computer network developed by the Advanced Research Project Agency (now the Defense Advance Research Projects Agency) in the 1960s and 1970s as a means of communication between research laboratories and universities. ARPANET was the predecessor to the Internet.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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arpanet in Culture

Arpanet definition

An acronym for Advanced Research Project Agency Network. An early communications network developed by the Department of Defense in the late 1960s. It connected high-tech research institutions and the military.

Note: Creating a communications system that could survive a nuclear war was a major impetus behind the development of this system.
Note: Arpanet is often spoken of as a precursor of the Internet.
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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