Morphogenetric model is a model in which rules are conceived of not as mental entities producing projections or reflections of themselves in the real world, but as restriction imposed on an otherwise random generative process, such as a cell aggregation model, or a model generating relationships in a graph.
Hillier, B. (1996, 2007), Space is the Machine: A Configurational Theory of Architecture. Space Syntax: London, UK. pp.192