Säikeen

Säikeen is the genitive singular form of the Finnish noun säie, which means thread, filament, or fiber. It is used to indicate belonging to or relating to a single filament, as in säikeen pituus (the length of the filament) or säikeen väri (the color of the fiber).

In everyday language, säie and säikeen appear in contexts such as textiles, biology, and materials science. In textiles, säie refers to an individual fiber within a yarn or fabric; in biology and materials science, it can describe a filamentous structure such as a nerve fiber or a polymer filament.

Usage notes: säikeen is a standard genitive form in written Finnish. When referring to more than one filament, the corresponding genitive form is säikeiden. The base form säie is used for the nominative case, while säikeen is specifically the genitive singular.