MUMPS (Massachusetts General Hospital Utility Multi-Programming System), or alternatively M, is a programming language created in the late 1960s, originally for use in the healthcare industry.
It was designed for the production of multi-user database-driven applications. It predates C and most other popular languages in current usage, and has very different syntax and terminology.
It was largely adopted during the 1970s and early 1980s in healthcare and financial information systems/databases, and continues to be used by many of the same clients today. It is currently used in electronic health record systems as well as by multiple banking networks and online trading/investment services.