(mathematics) The divisor function of an integer divided by the integer.

(economics) A price or quantity index, a discrete approximation to a continuous Divisia index.

(economics) A measure of the size of firms in relation to the industries they operate in, serving to indicate the amount of competition among them.

An author-level metric that attempts to measure both the productivity and the citation impact of the publications of a scientist or scholar, based on a set of most cited papers and the number of citations in other publications.

(medicine) The level of suspicion that a disease or condition is the underlying diagnosis based on the available findings in a patient.

plural of misery index

A measure of the reward that can be achieved through a given stochastic process with certain properties.

plural of Gittins index

plural of index digit

(zootomy) In other animals that digit corresponding to the human index finger.