Definition of simulation noun from the Oxford Advanced American Dictionary

      

    simulation

     noun
    noun
    NAmE//ˌsɪmyəˈleɪʃn//
     
     
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  1. 1[countable, uncountable] a situation in which a particular set of conditions is created artificially in order to study or experience something that could exist in reality a computer simulation of how the planet functions a simulation model An important part of training is role-play and the simulation of court cases.
  2. 2[uncountable] the act of pretending that something is real when it is not the simulation of genuine concern
See the Oxford Advanced Learner's Dictionary entry: simulation