Dictionary definition · index
noun
- a numerical scale used to compare variables with one another or with some reference number
- 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
- a mathematical notation indicating the number of times a quantity is multiplied by itself
- an alphabetical listing of names and topics along with page numbers where they are discussed
- the finger next to the thumb
verb
- list in an index
- provide with an index"index the book"
- adjust through indexation"The government indexes wages and prices"
Source: Open English WordNet (CC BY 4.0).