(transitive) To index (something) using index cards.

plural of index card

(information science) A term that captures the essence of the topic of a document, used as keyword to retrieve documents in an information system, for instance a catalog or a search engine.

(epidemiology) The first documented patient in a disease epidemic within a population or the first case of interest in an epidemiological investigation; the case of patient zero.

plural of index case

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

plural of orbital index

plural of heat index

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

a formula for the evaluation and quantification of mortality and morbidity risk as developed for and applied to homeless persons in various social initiatives in the USA