Definition of "simulating" [simulating]

• Present participle of simulate. (verb)

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• "* Six astronauts begin simulating this week a 520-day mission to Mars."
• "Sure, climate scientists do mention robustness of the ensemble of models in simulating 20th Century climate as evidence of correctness, but only as part of a much larger collection of arguments about validity."
• "We received an email at work today from a man asking for assistance in simulating a martian civilisation."