barbituric acid UK /ˌbɑː.bɪˌtjʊə.ɹɪk ˈas.ɪd/US /ˌbɑɹ.bɪˌt(j)ʊɹ.ɪk ˈæs.ɪd/ noun1 •A heterocyclic compound derived from pyrimidine that is the basis of all barbiturate drugs.
