field test

1. A test of something conducted in conditions under which it was designed to actually operate, especially out in the real world instead of in a laboratory or workshop.

   When it comes to combat equipment and vehicle design, computer simulations and field tests are both crucial, and neither one can be a total substitute for the other.

   a test of the performance of some new product under the conditions in which it will be used

2. A test of something conducted in conditions under which it was designed to actually operate, especially out in the real world instead of in a laboratory or workshop.

   A test of something that can be performed in the field rather than solely in a laboratory or workshop.

   Not until the 1990s did mycologists develop a field test that could differentiate between these types of fungus.

1. Tom failed a field sobriety test.

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