Indexation (noun)

1. The act of making an index.
2. A system for adjusting the level of a variable, especially wages or benefits, in line with changes in the cost of living.

Origin:

Early 17th century, from late latin indexation-, indexatio, from indexare, meaning to indicate or register.

Examples:

1. This dictionary needs an indexation.
2. The government has introduced indexation in pension system.
3. The indexation of wage will be carried out on a quarterly basis.
4. An indexation mechanism is used to link the payments to the inflation rate.
5. She advocated for indexation of social security benefits to help the elderly keep up with inflation.