This standard defines terms of the possible imperfections in oxyfuel gas, laser beam and plasma cuts which are collected and grouped. Imperfections are irregularities or deviations from the specified shape and location of cut. The standard only includes imperfections originating directly from oxyfuel gas, laser beam and plasma arc cutting; any adverse effects resulting from additional external stresses or strains are not considered. The type, shape and location of these imperfections are grouped together but conditions and causes of origin are not given.