This paper proposes a model to describe systems with large number of components and multiple functions assigned to each component. Systems designed by multi specialists have such characteristics, and these systems present higher performance. Due to the multiple functions designated to the components, the representation of the multi specialists’ systems requires description models with higher modeling capabilities than conventional description models.  The proposed model can represent relationships among more than three entities that symbolyzes components of a system, and can related among relationships.  Both are impossible if using conventional models.