strednej
Strednej is the feminine singular form of the Slovak adjective stredná in several grammatical cases (genitive, dative, and locative). It is not a standalone noun, but appears in phrases where it modifies a feminine noun. In everyday Slovak—and in Czech—the stem stred- denotes middle, central, or intermediate and is used in a range of contexts, including descriptions of position and level.
In education, stredná škola refers to the secondary school level that follows základná škola (primary education).
Etymology and usage: stredná and its related forms derive from Proto-Slavic *stredъ*, meaning middle or center.