Simulation/ˌsɪmjuˈleɪʃn/ Definition 1 of 3Pro Tip 1/3Visualization Aid Simulations are often used to visualize how real situations would occur. Medical students use simulations to visualize complex surgeries. Pro Tip 2/3Practice Scenarios Simulations allow practice without real-world risks or consequences. Pilots train using flight simulations to practice emergency scenarios. Pro Tip 3/3Realistic Feel High-quality simulations can feel almost identical to the real thing. The racing game's simulation of driving was incredibly realistic.