ISO/IEC 24744

ISO/IEC 24744 Software Engineering — Metamodel for Development Methodologies is an ISO/IEC standard for software engineering metamodelling for development methodologies. It defines a metamodel from which development methodologies can be instantiated.
In other words, ISO/IEC 24744 provides an agreed-upon set of words, plus their corresponding meanings, that can be used to describe methodologies used to develop software, hardware and other similar products.
From a technical viewpoint, ISO/IEC 24744 is based on the principles of method engineering and departs from the strict modelling paradigm sponsored by the Object Management Group, using instead an extension of the object-oriented approach that incorporates powertype patterns and clabjects.