Source : WordNet®

CPI
     n 1: an index of the cost of all goods and services to a typical
          consumer [syn: {consumer price index}, {cost-of-living
          index}]
     2: 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. [syn: {California Personality Inventory}]

Source : Free On-Line Dictionary of Computing

CPI
     
        {Common Program Interface}