Meaning of SIMULATION in English

SIMULATION

/ ˌsɪmjuˈleɪʃn; NAmE / noun

1.

[ C , U ] a situation in which a particular set of conditions is created artificially in order to study or experience sth that could exist in reality :

a computer simulation of how the planet functions

a simulation model

2.

[ U ] the act of pretending that sth is real when it is not :

the simulation of genuine concern

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.