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

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.

plural of index fossil

the forefinger

Any ancient remains of a plant or animal that lived during a specific geological period and that can be used to date the containing rocks.

(physics) The ratio of the speed of light in air or vacuum to that in another medium.

(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) A statistical estimate of the level of prices of some class of goods or services.

(information science) The act of describing a document by index terms to indicate what the document is about or to summarize its content, the index terms often coming from a controlled vocabulary.