imitation or enactment, as of something anticipated or in testing.
the act or process of pretending; feigning.
an assumption or imitation of a particular appearance or form; counterfeit; sham.
Psychiatry. a conscious attempt to feign some mental or physical disorder to escape punishment or to gain a desired objective.
the representation of the behavior or characteristics of one system through the use of another system, especially a computer program designed for the purpose.

1300–50; Middle English simulacion < Latin simulātiōn- (stem of simulātiō) a pretense. See simulate, -ion

nonsimulation, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
simulation (ˌsɪmjʊˈleɪʃən)
1.  the act or an instance of simulating
2.  the assumption of a false appearance or form
3.  a representation of a problem, situation, etc, in mathematical terms, esp using a computer
4.  maths, statistics, computing the construction of a mathematical model for some process, situation, etc, in order to estimate its characteristics or solve problems about it probabilistically in terms of the model
5.  psychiatry the conscious process of feigning illness in order to gain some particular end; malingering

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

mid-14c., "a false show, false profession," from O.Fr. simulation, from L. simulationem (nom. simulatio) "an imitating, feigning," noun of action from simulare "imitate," from stem of similis "like" (see similar).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

simulation sim·u·la·tion (sĭm'yə-lā'shən)

  1. Close resemblance or imitation, as of one symptom or disease by another.

  2. Assumption of a false appearance.

  3. Reproduction or representation, as of a potential situation or in experimental testing.

sim'u·late' (-lāt') v.
sim'u·la'tor (-lā'tər) n.
The American Heritage® Stedman's Medical Dictionary
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