[n] the act of giving a false appearance; "his conformity was only pretending"
[n] the act of imitating the behavior of some situation or some process by means of something suitably analogous (especially for the purpose of study or personnel training)
[n] representation of something (sometimes on a smaller scale)
[n] (computer science) 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"
affectation, appearance, deceit, deception, dissembling, dissimulation, figure, framework, globe, make-believe, mannerism, masquerade, mock-up, model, model, modeling, modelling, planetarium, pose, representation, restoration, roughcast, show, technique, theoretical account, war game
\Sim`u*la"tion\, n. [F. simulation, L. simulatio.] The act of simulating, or assuming an appearance which is feigned, or not true; -- distinguished from dissimulation, which disguises or conceals what is true. Syn: Counterfeiting; feint; pretense.