kiinteinen

Kiinteinen is a Finnish adjective meaning fixed, immovable, or constant. It is used to describe objects or concepts that do not change or are firmly attached, such as kiinteinen arvo (a fixed value) or kiinteinen piste (a fixed point). The term can refer to physical stability as well as to abstract constancy in rules, prices, or measurements.

In mathematics and science, kiinteinen piste denotes a point that remains unchanged under a given function or operation. In economics and everyday usage, it appears in phrases describing things that do not vary, such as kiinteät kustannukset (fixed costs) or kiinteä hinta (fixed price). By contrast, in casual speech kiinteä is often used for stability or attachment, while kiinteinen tends to appear in more formal or technical contexts.

Etymology: kiinteinen derives from the Finnish root kiinn- connected to kiinnittää, meaning to fix or fasten. The form conveys an adjectival sense of being fixed or permanently attached.

See also: kiinteistö, kiinteä, kiinnitys, pysyvyys, vakaa.