From Longman Dictionary of Contemporary EnglishRelated topics: Computerssimulationsim‧u‧la‧tion /ˌsɪmjəˈleɪʃən/●くろまる○しろまる○しろまるAWL noun[countable, uncountable]TDARTIFICIAL the activity of producing conditions which are similar to real ones, especially in order to test something, or the conditions that are produceda computer simulation used to train airline pilotssimulation ofa simulation of a rainforest environmentExamples from the Corpussimulation• Biomorphs should interact, in the computer, with a simulation of a hostileenvironment.• Paralleldistributedcomputingexcels in perception, visualization, and simulation.• There are simulation and arcademodes, manageroptions to arrange defenses and order lineups.• Pilotsreceiveadditional training by means of computer simulations.• Visitors also can try out flying without leaving the ground by taking a flightsimulationride.• Simplesimulations can be as effective for training purposes as more elaborate ones and can certainly be more cost effective.• Simple simulations of archaeological excavations like Dig are particularly useful.• Consequently, they have been run as softwaresimulations, often on supercomputers.• The diagrams are updated periodically during the course of the simulation.simulation of• Rescuecrews are participating in a simulation of a majortrafficaccident.From Longman Business Dictionarysimulationsim‧u‧la‧tion /ˌsɪmjəˈleɪʃən/ noun [countable, uncountable]an activity or situation that produces conditions which are not real, but have the appearance of being real, used especially for testing somethingA computer simulation allows project engineers to study in detail the manufacturing process operations at the factory site. —simulate verb [transitive]The Project Management Game simulates a design and build project on a compressed time scale. —simulator noun [countable]A new computer simulator has been designed to teach drivers how to handle a skid.