Pysyvyys

Pysyvyys is a Finnish noun meaning durability, permanence, or persistence. It denotes the quality of remaining the same or continuing over time despite changes in circumstances. The term derives from the adjective pysyvä, meaning permanent or stable, with the abstract suffix -vyys forming a noun.

In philosophy and linguistics, pysyvyys is used to discuss persistence through time—the idea that objects or states endure while time passes. It contrasts with gradual change or transformation and is related to discussions of identity, continuity, and stability.

In information technology and data management, pysyvyys translates to data persistence—the ability of data to outlast the process that created it. It concerns how information is stored durably, for example in databases, file systems, or archival storage, and the guarantees provided that data remains accessible after events like power loss or system crashes.

In other fields, pysyvyys can refer to durability of materials or products, indicating resistance to wear, corrosion, or degradation over time. In archival science and digital preservation, pysyvyys denotes long-term accessibility and readability of records, often requiring strategies for format migration, metadata, and robust storage media. In ecology, the term can describe ecosystem stability and resilience, the capacity to absorb disturbances and continue functioning.