index number index notation • indexof · · · Info · Definitions · Synonyms · Characters · · index number · · Text Common · · Latin · · Scripts 12 · · Length 4 · · Syllables Definitions · · · (noun) a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time. Synonyms: index, index number, indicant, indicator. · · Noun Definition 1 Synonyms · · · index · · Synonym 1 indicant · · Synonym 2 indicator · · Synonym 3 Characters · · space U+0020 b latin small letter b U+0062 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E r latin small letter r U+0072 u latin small letter u U+0075 x latin small letter x U+0078