kestollisen

Kestollisen is the genitive singular form of the Finnish adjective kestollinen, which describes something durable or long-lasting. It is used to refer to objects, materials or systems that maintain functionality and performance over time, especially in technical or design contexts.

Formation and meaning: The root kest- conveys endurance, and the suffix -ollinen yields adjectives denoting a property. Consequently, kestollinen describes a durability-related quality, and kestollisen is used whenever the noun it modifies is in the genitive.

Usage examples: Kestollisen rakennusmateriaalin valinnassa huomioidaan sekä lujuus että pitkäikäisyys. Tämän laitteen kestollisen suunnittelun ansiosta huoltotarve pysyy alhaisena.

Context and nuance: In engineering, industrial design and product specifications, kestollinen describes a property that supports durability under expected use and time. It is closely related to kestävyys (durability), kulutuskestävyys (wear resistance) and luotettavuus (reliability).

Notes: The term is primarily found in technical writing and product documentation. Like other adjectives, kestollisen changes form with the noun’s case and number, and its everyday use is somewhat limited compared with more common terms like kestävä or kestävyys.