Definitions for "Advanced Research Projects Agency"
Keywords:  arpa, darpa, arpanet, defense, arin
ARPA. The US government agency that funded the ARPANET, predecessor to the Internet. ARPA is now called DARPA(Defense Advanced Research Projects Agency)
An agency of the U.S. Department of Defense responsible for the development of new technology for use by the military. ARPA (formerly known as DARPA, nee ARPA) was responsible for funding much of the development of the Internet we know today, including the Berkeley version of Unix and TCP/IP. [Source: NNSC
See Defense Advanced Research Projects Agency.