noun
a simulation or imitation of something
verb
to imitate or reproduce the appearance or characteristics of something
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The engineer used a computer program to simulate the effects of different wind speeds on the bridge design.
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I'm going to use this flight simulator to simulate flying a plane.
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Let's simulate a shopping spree by browsing online stores and adding items to our cart.
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Her smile was so genuine that it seemed to simulate sunshine on a cloudy day.