1. A combined grinding and machining operation in which the abrasive cathodic grinding wheel is in contact with the anodic surface or an electrode from which electrons leave an electrolyte.

Used with a metal-bonded and diamond-impregnated grinding wheel.

2. A combined grinding and machining operation in which the abrasive, cathodic grinding wheel is in contact with the anodic work piece beneath the surface of an electrolyte.