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1. A numerical scale used to compare variables with one another or with some reference number
    
2. 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
   - index number, indicant, indicator
    
3. A mathematical notation indicating the number of times a quantity is multiplied by itself
   - exponent, power
    
4. An alphabetical listing of names and topics along with page numbers where they are discussed
    
5. The finger next to the thumb
   - index finger, forefinger

1. List in an index
    
2. (publication) provide with an index
   "index the book"
    
3. Adjust through indexation
   "The government indexes wages and prices"

Derived forms: indexing, indices, indexes, indexed

Type of: determine, fact, finger, furnish, graduated table, influence, list, listing, mathematical notation, mold [N. Amer], mould [Brit, Cdn], offer, ordered series, provide, regulate, render, scale, scale of measurement, shape, supply

Part of: back matter, end matter

Encyclopedia: Index, Virginia