(software engineering) A software testing methodology in which individual tests (unit tests) are developed for each small part of a program.

The testing of a nuclear weapons for effectiveness, yield, and explosive capability.

(software engineering) Testing a program after a modification to ensure that areas that should not be affected by the update behave as they did in previous versions.

The psychotherapeutic technique of reflecting on the objective or real world and one's relationship to it, so as to distinguish the internal world of thoughts and feelings from the external world.

(figuratively)

present participle of means test

(software, testing) A testing methodology in which random data (“fuzz”) is supplied as input to a program.

A method of determining the general classification of ferrous materials that normally requires taking a piece of metal, usually scrap, to a grinding wheel and observing the sparks emitted.

present participle of spark test

The practice of using non-human animals in scientific experimentation.