[noun] a numerical scale used to compare variables with one another or with some reference number
[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:number, indicant, indicator
[noun] a mathematical notation indicating the number of times a quantity is multiplied by itself Synonyms:exponent, power
[noun] an alphabetical listing of names and topics along with page numbers where they are discussed