from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An organic acid, C4H4O3N2, used in the manufacture of barbiturates and some plastics.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A heterocyclic compound derived from pyrimidine that is the basis of all barbiturate drugs.
from the GNU version of the Collaborative International Dictionary of English
- A white, crystalline substance, CH2(CO.NH)2.CO, derived from alloxantin, also from malonic acid and urea, and regarded as a substituted urea.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a white crystalline acid derived from pyrimidine; used in preparing barbiturate drugs
Partial translation of German Barbitursäure : barb- (perhaps from the name Barbara) + -itur (ultimately from Ur(in), urine, from Latin ūrīna; see urine) + Säure, acid.(American Heritage® Dictionary of the English Language, Fourth Edition)