barbituric acid


a white, crystalline, slightly water-soluble powder, C4H4N2O3, used chiefly in the synthesis of barbiturates.

Origin of barbituric acid

First recorded in 1865–70
Also called malonylurea. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for barbituric acid

barbituric acid

/ (ˌbɑːbɪˈtjʊərɪk) /


a white crystalline solid used in the preparation of barbiturate drugs. Formula: C 4 H 4 N 2 O 3Systematic name: 2,4,6-trioxypyrimidine Also called: malonylurea

Word Origin for barbituric acid

C19: partial translation of German Barbitursäure, perhaps from the name Barbara + uric + Säure acid
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

Medicine definitions for barbituric acid

barbituric acid

[ bär′bĭ-turĭk ]


An organic acid used in the manufacture of barbiturates.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.