sodium thiopental sodium tetraborate • sodium thiosulfate · · · Info · Definitions · Synonyms · Characters · · sodium thiopental · · Text Common · · Latin · · Scripts 17 · · Length 6 · · Syllables Definitions · · · (noun) a long-acting barbiturate used as a sedative. Synonyms: sodium thiopental, phenobarbital, phenobarbitone, Luminal, purple heart. · · Noun Definition 1 Synonyms · · · phenobarbital · · Synonym 1 phenobarbitone · · Synonym 2 luminal · · Synonym 3 purple heart · · Synonym 4 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075