Even programs which generally consider themselves interdisciplinary, like Women Studies, but which have become departments in order to survive in the university bureaucracy, would be labeled as disciplines. My solution is simple and practical, though admittedly arbitrary. Let's accept the basic structure of knowledge as it was established in the academy at the beginning of the twentieth century. However, the nature of the interdisciplinarity varies quite a bit, so it makes sense to seek some conceptual distinctions in this large reservoir. Multidisciplinary teams might teach a survey course, work on a research project, or serve as a presentation or expert panel.
Multidisciplinary efforts are often problem centered.
This category can be divided into seven different types. Professional preparation programs invariably borrow from many disciplines. Examples include engineering, health education, management, etc. The grand synthesis aspires to put them all together, but it has never been successfully accomplished due to the incommensurability of disciplinary structures. These overarching thought models are holistic in intent.