(information science) An indexing algorithm which indexes a document based on the keywords being searched for.

(finance) A Japanese stock market index; normally refers to the Nikkei 225, which is calculated by aggregating the share prices of 225 large Japanese companies quoted on the Tokyo Stock Exchange, and thus reflects the performance of major Japanese businesses.

(economics) Ellipsis of ease of doing business index..

(anatomy) In the skull, the ratio of the vertical height to the transverse width of the orbit, which is taken as the standard, equal to 100.

In a skull, the ratio of the distance from the middle of the nasofrontal suture to the basion (taken equal to 100), to the distance from the basion to the middle of the front edge of the upper jaw.

A measure of how quickly blood sugar levels rise after eating a particular type of food, on a scale where the index of glucose or ordinary table sugar is 100.

(economics) An economic indicator formed by adding the unemployment rate to the inflation rate.

plural of glycemic index

(information science) A controlled set of terms selected from natural language and used to represent, in summary form, the subjects of documents within a given field of knowledge.

(databases) A listing of records used to prune them during requests.