indexation

Imagine your pay or pension staying the same year after year while prices keep rising. It may look unchanged on paper, but in real life it buys less. That's where indexation comes in. It means linking a payment, price, or value to an index, often an inflation index, so it can rise or fall in step with that measure.

This word is used most often in economics and public policy. For example, wages, pensions, benefits, rents, or tax bands may be changed by indexation so they keep pace with the cost of living. In another common use, especially in libraries, databases, and search systems, indexation can also mean putting information into an index so it can be found more easily.

Indexation is the act of linking something to an index. In everyday English, this usually means adjusting money values according to a price index, such as inflation. A wage, pension, benefit, tax threshold, contract payment, or bond can be subject to indexation so that its value changes in line with the chosen measure instead of staying fixed.

This is why the word often appears in economics, government policy, and finance. If pensions are tied to the Consumer Price Index (CPI), for example, they may go up when the cost of living goes up. In that sense, indexation is used to protect buying power or to keep a rule, payment, or price aligned with economic conditions over time.

There is also another established meaning. In information science, publishing, and library work, indexation can mean the making of an index or the inclusion of material in one. A book, article, website, or database may undergo indexation so people can find topics, names, or records more easily.

So the word usually points in one of two directions: adjustment by reference to an index, especially for inflation, or organization within an index for easier search and retrieval. The exact meaning depends on the context, but in both cases the central idea is the same: something is being linked to a structured point of reference.