simulation

noun

1. the act of simulating; pretense; feigning
2. 1. a simulated resemblance
   2. an imitation or counterfeit
3. the use of a computer to calculate, by means of extrapolation, the effect of a given physical process
4. the duplicating or reproducing of certain characteristics or conditions, as of a system or physical process, by the use of a model or representation, for study, training, etc.