barbituric acid Definition
bar·bi·tu·ric acid (bär′bə tyo̵or′ik, -to̵or′-)
noun
a white, odorless, crystalline acid, CHON, used in the manufacture of sedatives and hypnotics, in making dyes, and as a polymerization catalyst
Etymology: < Ger barbitursäure (< ModL Usnea barbata, lit., bearded moss + ursäure, a ureide of acid character < urea, urea + säure, acid) + -ic
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