Process fragmentation provides the basis for re-usability and process improvement. Various re-searchers have already introduced different definitions for what constitutes a reasonable process fragment, and have offered algorithmic support for identifying such fragments. As we will show in this paper, some of these definitions suffer from ambiguity or imprecision. Therefore, the objectives of this paper are twofold: first, we provide an ontological assessment of the various process fragment definitions based on the well-known Bunge’s Ontology and its process representational model, GPM. On this basis, we then extract the most important features of these definitions in order to formalize a precise definition for process fragments and propose a precise and non-ambiguous definition: morphological fragmentation. We present our work through a case study and report on our observations.

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