calcium hydroxide calcium fluoride • calcium hypochlorite · · · Info · Definitions · Synonyms · Characters · · calcium hydroxide · · Text Common · · Latin · · Scripts 17 · · Length Definitions · · · (noun) a caustic substance produced by heating limestone. Synonyms: lime, slaked lime, hydrated lime, calcium hydrate, caustic lime, lime hydrate. · · Noun Definition 1 Synonyms · · · calcium · · Synonym 1 ca · · Synonym 2 atomic number 20 · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 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 o latin small letter o U+006F r latin small letter r U+0072 u latin small letter u U+0075 x latin small letter x U+0078 y latin small letter y U+0079