application

1. (computing) A computer program or the set of software that the end user perceives as a single entity as a tool for a well-defined purpose. (Also called: application program; application software.)Examples: "This application can connect to most social networks."; "Saeed straightened and held up his phone, directing its camera at the heavens, consulting an application that indicated the names of celestial bodies he did not know."countableuncountable

2. (bureaucracy, law) A petition, entreaty, or other request, with the adposition for denoting the subject matter.Examples: "Their application for a deferral of the hearing was granted."countableuncountable

3. (computing theory) The substitution of a specific value for the parameter in the abstraction, in lambda calculus.countableuncountable

4. (obsolete) Compliance.countableobsoleteuncountable