active application

n : an application that is currently running and in the

foreground

function application

A {function} applied to (some of) its {argument}s. If it is

not applied to all its argument then it is a "{partial

application}". Application is usually written in the form

f(x) but some languages such as command line interpreters and

many {functional language}s use {juxtaposition}: f x. {Lisp}

places the parentheses around the whole application: (f x).