/uy'byooh proh"feuhn, uy byooh"proh fen'/ , n. Pharm.
a white powder, C 13 H 18 O 2 , used esp. in the treatment of rheumatoid arthritis and osteoarthritis as an anti-inflammatory, analgesic, and antipyretic.
[ 1965-70; by contr., rearrangement and resp. of isobutylphenyl propionic acid, the chemical name ]