Ketten

Ketten is the plural form of the German noun Kette, meaning chain. The term is used across contexts to denote a connected series of linked elements, often made of metal, but also appearing in metaphorical expressions. In everyday language, Ketten can refer to metal chains, bicycle or conveyor chains, and similar link structures, as well as to mountain chains when speaking of geography in the plural in German.

In engineering and industry, chains are used to transmit mechanical power between sprockets, to lift loads, or to convey materials. Roller chains and other variants are common in bicycles, motorcycles, manufacturing equipment, and mining. The design varies by load, speed, environment, and lubrication requirements.

In jewelry and fashion, Kette refers to a chain worn as a necklace or bracelet. Chains come in many styles—such as link chains, cable chains, and curb chains—and in different materials, including gold, silver, and steel.

The word also appears in compound terms and phrases. Kettenreaktion means chain reaction in chemistry and physics, while Kettenbrief refers to a chain letter. The plural Ketten is also used to describe multiple chains or chain-like systems in various disciplines.

Ketten can function as a surname or as part of place names and toponyms in German-speaking areas, though such uses are relatively uncommon. In cultural references, the term appears mainly as the everyday noun described above.