sodium hydroxide sodium hydrosulphite • sodium hypochlorite · · · Info · Definitions · Synonyms · Characters · · sodium hydroxide · · Text Common · · Latin · · Scripts 16 · · Length 6 · · Syllables Definitions · · · (noun) a strongly alkaline caustic used in manufacturing soap and paper and aluminum and various sodium compounds. Synonyms: sodium hydroxide, caustic soda. · · Noun Definition 1 Synonyms · · · caustic soda · · Synonym 1 Characters · · space U+0020 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 m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075 x latin small letter x U+0078 y latin small letter y U+0079