Meanings
ARPANET1
alternative ARPAnet
- abbreviationinitialismcomputingInitialism of Advanced Research Projects Agency Network, the world's first operational packet-switching network.
ARPANET went online in September, 1969, and connected four computers located in California and Utah.
2001, Bryan Pfaffenberger, Computers in Your Future, Pearson College Division, →ISBN, page 2672 more examples
The ARPANET was especially important to the Internet project, and was often called the backbone network because it was the central WAN that tied researchers together.
2007, Douglas Comer, The Internet Book […] , Prentice Hall, →ISBNIt allowed the ARPANET, a single network, to develop into the Internet—an internetwork of hundreds of thousands of networks.
2009, John Cassidy, Dot.Con […] , Harper Collins, →ISBN, page 17
ARPAnet2
- alternativeAlternative spelling of ARPANET.
Origin
From earlier ARPA (“Advanced Research Projects Agency”) with net for network.
Full word history & related roots →Rhymes & wordplay
Anagrams
Cite this entry
ARPANET. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/ARPANET
“ARPANET.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/ARPANET. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “ARPANET,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/ARPANET.
Source: ARPANET on Wiktionary, CC BY-SA 4.0.