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working model

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Definition of working model

: a model of an actual or proposed machine that can do on a small scale the work which the machine itself does or is expected to do a working model of a freight locomotive

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First Known Use of working model

1739, in the meaning defined above

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The first known use of working model was in 1739

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“Working model.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/working%20model. Accessed 7 Mar. 2021.

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