noun Chemistry, Pharmacology.
  1. 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.
Also ac·et·an·i·lid [as-i-tan-l-id] /ˌæs ɪˈtæn l ɪd/.

Origin of acetanilide

First recorded in 1860–65; acet- + anilide
Also called acetylaniline. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for acetanilide


acetanilid (ˌæsɪˈtænɪlɪd)

  1. 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

Word Origin for acetanilide

C19: from aceto- + aniline + -ide
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

acetanilide in Medicine


  1. A white crystalline compound used to relieve pain and reduce fever.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.