Arpanet

//ˈɑɹ.pəˌnɛt// name

name ·Rare ·Advanced level

Definitions

Proper Noun
  1. 1
    Initialism of Advanced Research Projects Agency Network, the world's first operational packet-switching network. abbreviation, alt-of, initialism

    "ARPANET went online in September, 1969, and connected four computers located in California and Utah."

  2. 2
    Alternative spelling of ARPANET. alt-of, alternative

Example

More examples

"The internet's predecessor, the ARPANET, transmitted its first message in 1969."

Etymology

From earlier ARPA (“Advanced Research Projects Agency”) with net for network.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.