litmus paper litmus milk • litmus test · · · Info · Definitions · Characters · · litmus paper · · Text Common · · Latin · · Scripts 12 · · Length 4 · · Syllables Definitions · · · (noun) unsized paper treated with litmus for use as an acid-base indicator. Synonyms: litmus paper. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075