Dictionary

trial run

noun

: a test in which a product or procedure is tried in order to see if it works correctly

Full Definition of TRIAL RUN

:  a testing exercise :  experiment
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Examples of TRIAL RUN

  1. They will put the software through many trial runs before putting it on the market.
  2. We will have to give the machine a trial run.

First Known Use of TRIAL RUN

1903

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