intelligence quotient; IQ
discomfort index; temperature-humidity index
consumer price index; CPI
composite index (stock exchange); aggregate index; all-items index; CI
industrial production index; IPI
business index; business barometer
exponent portion; characteristic (e.g. in floating-point representation)
consumer confidence index; CCI; consumer attitude index
characteristic of a logarithm
colour index; color index
wholesale price index; WPI
wet bulb globe temperature index; WBGT index; heat stress index
diffusion index; DI; business sentiment index
index of capacity utilization ratio; ICUR; capacity utilization index; operating rate index