field test noun 2field-test verb 1forms 4 noun2 •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 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. field-test verb1 •To test something using the conditions that it was designed to operate under, especially out in the real world instead of in a laboratory or workshop.The JNR [Japan National Railways] is field-testing other ideas. — 1964 formsfield-tested · field-testing · field-tests · field tests