definition of
[index]

[1] #1 index n. a numerical scale used to compare variables with one another or with some reference number. wn

[2] #2 index v. list in an index. wn

[3] #3 index n. [index number, 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. wn

[4] #4 index v. provide with an index; "index the book". wn

[5] #5 index n. [exponent, power] a mathematical notation indicating the number of times a quantity is multiplied by itself. wn