subtest

• sub-test

From sub- +‎ test.

subtest (plural subtests)

1. A test that is part of a larger one.

subtest (third-person singular simple present subtests, present participle subtesting, simple past and past participle subtested)

1. To perform tests on a subgroup or subset.
   • 2007, Anthony J. Petrosino, ‎Taylor Martin, ‎Vanessa Svihla, Developing Student Expertise and Community

     Subtesting showed that these differences existed between the urban and suburban groups in the application items, whereas the rural group was not significantly different from the suburban or urban groups.