simulator

[ sim-yuh-ley-ter ]
/ ˈsɪm yəˌleɪ tər /

noun

a person or thing that simulates.
a machine for simulating certain environmental and other conditions for purposes of training or experimentation: a flight simulator.

Origin of simulator

First recorded in 1825–35, simulator is from the Latin word simulātor imitator, counterfeiter. See simulate, -tor
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for simulator

simulator
/ (ˈsɪmjʊˌleɪtə) /

noun

any device or system that simulates specific conditions or the characteristics of a real process or machine for the purposes of research or operator trainingspace simulator
a person who simulates
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012