Definitions for "UNIX operating system"
1. An operating system developed by Bell Laboratories that features multiprogramming in a multi-user environment. (Trademark of AT&T Bell Laboratories). 2. (IRM) The first operating system to be written in a high-level programming language, and to execute on several different hardware platforms.
trademark for a powerful operating system
An operating system developed by Bell Laboratories that features multiprogramming in a multiuser environment. The UNIX operating system was originally developed for use on minicomputers, but has been adapted for mainframes and microcomputers. Note: The AIX operating system is IBM's implementation of the UNIX operating system.