Läpäisseinen

The term "läpäisseinen" is a Finnish adjective that translates to "perforated" or "pierced" in English. It describes an object that has one or more holes passing through it. This can refer to a variety of items, from simple materials like paper or fabric to more complex structures.

The concept of being läpäisseinen is often relevant in contexts such as manufacturing, where drilling or punching holes is a common process. In engineering, a perforated component might be designed for specific functions, such as ventilation, drainage, or to reduce weight. In everyday life, examples include a perforated card, a sieve, or a piece of clothing with deliberate holes. The size, shape, and arrangement of the perforations can significantly alter the properties and uses of the object. The term implies a complete passage through the material, distinguishing it from merely having a surface indentation.