noun Chemistry, Pharmacology.
- a white, crystalline, odorless, organic powder, C8H9NO, produced by the action of glacial acetic acid on aniline, used chiefly in organic synthesis and formerly in the treatment of fever and headache.
- a white crystalline powder used in the manufacture of dyes and rubber, as an analgesic in medicine, and as a precursor in penicillin manufacture. Formula: C 6 H 5 NHCOCH 3
- A white crystalline compound used to relieve pain and reduce fever.