vyöryttävä

Vyöryttävä is a Finnish present active participle derived from the verb vyöryttää, meaning to roll or slide down a slope or to topple. As an adjective, it describes something that is rolling, sliding, or capable of rolling or sliding. In general use it can refer to objects in motion under gravity, for example vyöryttävä kivi (a rock that is rolling/sliding) or vyöryttävä maa (a mass that is sliding).

In scientific and technical contexts the term is used to characterize materials or surfaces with sliding potential or that are actively moving. In geology and geotechnics, vyöryttävä aine may describe a mass movement that is in motion or likely to move, such as during landslides or rock avalanches. The word helps distinguish between static and moving masses and between different stages of a sliding process.

Form and usage notes: vyöryttävä is the present active participle of vyöryttää and is typically used attributively directly before a noun, where it acts as a descriptive adjective. It can appear in neutral descriptive prose as well as technical descriptions of motion, stability, and failure in slopes or other inclined surfaces. Related terms include vyörytys (landslide or mass movement) and vyöryttää (to cause to roll or slide).

See also: vyöry, vyörytys, vyöryttää.