What is the term for a deep scratch or incision?

The term that accurately refers to a deep scratch or incision is "Riefe." This term specifically describes a groove or a channel formed by an incision, which can occur in a variety of materials, including metal or wood. In technical contexts, understanding such terms is crucial for accurately describing alterations to a surface, whether it be in manufacturing, engineering, or material sciences.

Other options do not convey the same meaning related to a deep scratch or incision. Terms like "Ausfransung" typically refer to fraying or a jagged edge, while "Kleberauflösen" relates to the dissolution of adhesive substances. "Reibkorrosion" pertains to wear or corrosion caused by friction, which is unrelated to the concept of a scratch or incision.