barbiturate barbitos • barbituric · · · Info · Definitions · Characters · · barbiturate · · Text Latin · · Script 11 · · Length Definitions · · · (noun) organic compound having powerful soporific effect; overdose can be fatal. · · Noun Definition 1 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 i latin small letter i U+0069 r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075