Definition of Simulation

Noun: simulation ,sim-yu'ley-shun

The act of imitating the behaviour of some situation or some process by means of something suitably analogous (especially for the purpose of study or personnel training)
(computing) the technique of representing the real world by a computer program
"a simulation should imitate the internal processes and not merely the results of the thing being simulated";
- computer simulation, sim
Representation of something (sometimes on a smaller scale)
- model
The act of giving a false appearance
"his conformity was only simulation";
- pretense [N. Amer], pretence [Brit, Cdn], pretending, feigning