We don't have any synonyms for arpa yet.
Think arpa belongs in the thesaurus? Recommend it and we'll take a look.
Definition of arpa:
(n) :
(US politics) Acronym of American Rescue Plan Act.
(n) :
(military, US, historical) Acronym of Advanced Research Projects Agency, renamed to DARPA in 1972.
(n) :
(navigation) Initialism of Automatic Radar Plotting Aid.
(n) :
(politics) Initialism of Association for Reformed Political Action.