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The term that describes the height of a weld above the base metal in a groove weld is "weld reinforcement." This term refers to the additional material that is deposited during the welding process, resulting in a protruding shape above the surface of the base metal. Weld reinforcement plays an important role in structural integrity, as it can enhance the strength and durability of the joint.

In welding terminology, the crown of the weld refers to the uppermost surface of the weld bead, which is not specifically defined as the height above the base metal. Weld buildup is a broader term that can refer to any accumulation of weld material but does not specifically capture the height aspect. The face of the weld usually denotes the exposed surface of the weld bead, again not specifically addressing the height above the base metal.

Understanding these distinctions is key in discussions about weld specifications, strength requirements, and visual inspections in welding practices.