(philosophy) The problem, considered by Ludwig Wittgenstein (1889-1951) and other philosophers, of whether it is possible for a private language to exist.

(philosophy) The thesis or contention that a private language cannot exist.

(computing) A network set up for use by a limited number of individuals, such as employees of a company, operating over a large area. The network typically uses encryption to keep information secure.

A unique number assigned by IANA to identify objects that are defined by an enterprise.

(telecommunications) A telecommunications switching system, physically located at a customer's place of business, that provides internal communication between users and also access to outside (trunk) telephone lines.

(US) An enlisted rank in the United States Army, of rank E-3, ranking above a private and below a corporal or specialist.

Alternative form of public-private partnership

Alternative form of public-private partnership

plural of private-use character

(typography) A character whose use is defined by private users and companies rather than defined by a standard such as Unicode, and which therefore has no universally accepted meaning.