simulations
n. C / Un. models or computer programs that copy how something works in real life. You use them to practice or test things without any real danger.
n. the imitation of the operation of a real-world process or system over time. Often involves computer models to study the behavior of complex systems under varying conditions.
The pilots practice landing in flight simulations.
Scientists use computer simulations to predict how the climate might change over the next fifty years.
Advanced medical training now incorporates high-fidelity simulations that allow students to perform complex surgical procedures on digital patients before entering a real operating theater.
Countable when referring to specific instances or software programs; uncountable when referring to the general technique or field of study.