A discontinuity with a length that is substantially greater than its width.

Spooled or coiled filler metal that has been wound in distinct layers such that adjacent turns touch.

The distance from the root of the joint to the toe of the fillet weld.

A process that fuses material with the heat from a concentrated coherent beam impinging upon the members to be joined.

A process that severs material with the heat from a concentrated coherent beam impinging upon the work-piece.