simulator

from WordNet (r) 3.0 (2006)
simulator
    n 1: a machine that simulates an environment for the purpose of
         training or research
    
from The Collaborative International Dictionary of English v.0.48
Simulator \Sim"u*la`tor\, n. [L.]
   One who simulates, or feigns. -- De Quincey.
   [1913 Webster]
    

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