1. spark test - Noun
2. spark test - Verb
spark test (third-person singular simple present spark tests, present participle spark testing, simple past and past participle spark tested)
(metalworking) To test for the general character of a steel, when testing a piece of steel, by grinding it, producing sparks, using color of sparks to determine its general classification.
spark test (plural spark tests)
An instance of spark testing.