index number(n = noun.communication) index, indicant, indicator - 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;
is a kind of fact
has particulars: bmi, body mass index, business index, leading indicator, price index, price level, short account, stock index, stock market index

aba transit number, algebraic number, atomic number, atomic number 1, atomic number 10, atomic number 100, atomic number 101, atomic number 102, atomic number 103, atomic number 104, atomic number 105, atomic number 106, atomic number 107, atomic number 108, atomic number 109, atomic number 11, atomic number 110, atomic number 111, atomic number 112, atomic number 113, atomic number 114, atomic number 115, atomic number 116, atomic number 12, atomic number 13, atomic number 14, atomic number 15, atomic number 16, atomic number 17, atomic number 18, atomic number 19, atomic number 2, atomic number 20, atomic number 21, atomic number 22, atomic number 23, atomic number 24, atomic number 25, atomic number 26, atomic number 27, atomic number 28, atomic number 29, atomic number 3, atomic number 30, atomic number 31, atomic number 32, atomic number 33, atomic number 34, atomic number 35, atomic number 36, atomic number 37, atomic number 38, atomic number 39, atomic number 4, atomic number 40, atomic number 41, atomic number 42, atomic number 43, atomic number 44, atomic number 45, atomic number 46, atomic number 47, atomic number 48, atomic number 49, atomic number 5, atomic number 50, atomic number 51, atomic number 52, atomic number 53, atomic number 54, atomic number 55, atomic number 56, atomic number 57, atomic number 58, atomic number 59, atomic number 6, atomic number 60, atomic number 61, atomic number 62, atomic number 63, atomic number 64, atomic number 65, atomic number 66, atomic number 67, atomic number 68, atomic number 69, atomic number 7, atomic number 70, atomic number 71, atomic number 72, atomic number 73, atomic number 74, atomic number 75, atomic number 76, atomic number 77, atomic number 78, atomic number 79, atomic number 8, atomic number 80, atomic number 81, atomic number 82, atomic number 83, atomic number 84, atomic number 85, atomic number 86, atomic number 87, atomic number 88, atomic number 89, atomic number 9, atomic number 90, atomic number 91, atomic number 92, atomic number 93, atomic number 94, atomic number 95, atomic number 96, atomic number 97, atomic number 98, atomic number 99, avogadro number, avogadro's number, back number, bank identification number, baryon number, binary number system, box number, breadth index, brinell number, business index, call number, card index, cardinal number, cephalic index, complex number, composite number, compound number, consumer price index, cost-of-living index, cranial index, decimal number system, duodecimal number system, f number, facial index, fibonacci number, fixed-point number, floating-point number, hexadecimal number system, identification number, imaginary number, imaginary part of a complex number, index, index case, index finger, index fossil, index fund, index of refraction, index register, irrational number, large number, license number, mach number, magic number, mass number, natural number, nucleon number, number, number 1, number agreement, number among, number cruncher, number crunching, number one, number one wood, number representation system, number system, number theorist, octal number system, octane number, opposite number, ordinal number, oxidation number, page number, personal identification number, phone number, pin number, po box number, post-office box number, price index, prime number, producer price index, pure imaginary number, random number generator, rational number, real number, refractive index, registration number, retail price index, sexadecimal number system, social security number, standard and poor's index, stock index, stock market index, stop number, telephone number, thumb index, transcendental number, wave number, whole number, wholesale price index