# ARPANET

> English word · Proper noun · IPA /ˈɑɹ.pəˌnɛt/ · frequency rank #92,347

## Definitions
1. Initialism of Advanced Research Projects Agency Network, the world's first operational packet-switching network.

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

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/arpanet