CPI
noun [ C ]
ukus ECONOMICS, COMMERCE
abbreviation for consumer price index: a list of the prices of basic goods and services, showing how they change each month. The CPI is usually used to measure inflation:
About 55% of the CPI measures the cost of services, ranging from health care to airline fares.
Compare
cost of living index
retail price index
GOVERNMENT, POLITICS, LAW
abbreviation for Corruption Perceptions Index