See also: rpn English Noun RPN (uncountable) (computing) Initialism of reverse Polish notation. Translations reverse Polish notation German: UPN f Polish: ONP (pl) n Proper noun RPN (Philippines, broadcasting) Initialism of Radio Philippines Network. Anagrams prn, p*rn, p.r.n., NPR, PRN, PNRWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads