# ISI

CEFR C2 · Noun

Source: https://englishreference.com/word/isi
Updated: 2026-05-08

## Definition

a way to measure how much prices change for things that people buy. It is often used in countries like India to track how expensive life is getting.

For teachers: a statistical measure that tracks changes in the price level of a weighted average market basket of consumer goods and services. Typically used in specific economic jurisdictions, such as India, to monitor inflation and adjust wages or pensions.

## Examples

- The government monitors the ISI to understand inflation trends.
- Economists noted that the recent rise in the ISI was driven primarily by a sharp increase in food and fuel costs.
- While the ISI provides a snapshot of consumer price volatility, critics argue that the current weighting of the basket fails to account for the shifting consumption patterns of the urban middle class.

## Usage notes

- Often used with the definite article ('the ISI') when referring to the specific index of a country.

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