Definitions for CPI
Random House Webster's College Dictionary
consumer price index.
consumer price index, CPI, cost-of-living index(noun)
an index of the cost of all goods and services to a typical consumer
California Personality Inventory, CPI(noun)
a self-report personality inventory originally derived from the MMPI; consists of several hundred yes-no questions and yields scores on a number of scales including dominance and self acceptance and self control and socialization and achievement etc.