model 1. (simulation) A description of observed or predicted behaviour of some system, simplified by ignoring certain details. Models allow complex systems, both existent and merely specified, to be understood and their behaviour predicted. A model may give incorrect descriptions and predictions for situations outside the realm of its intended use. A model may be used as the basis for simulation.
Note: British spelling: "modelling", US: "modeling". Last updated: 2008-04-28
2. (programming) The core part of a Model-View-Controller or similar software architecture; the part that stores the data and runs the business rules or algorithms. Last updated: 2014-11-27
