Okresu

Okresu is the genitive singular form of the Polish noun okres, which denotes a period, a span of time, or an era. The base noun okres is masculine and commonly used in many contexts to refer to durations, phases, or distinct segments within history, science, and everyday language. The genitive form okresu is used in phrases that express possession or measurement, such as długość okresu (the length of the period) or granice okresu (the boundaries of the period).

In usage, okres has several related senses. In everyday language, it refers to any defined time span, for example a school term, a calendar period, or a historical era. In geology, okres geologiczny denotes a geological period, a unit of time within an era. In chemistry and related sciences, okres is also the term for a horizontal row of the periodic table; the elements in a given row share the same principal energy level, and there are seven periods in the standard table.

Morphology and inflection: okres is masculine; singular forms include okres (nominative/accusative), okresu (genitive), okresowi (dative), okresem (instrumental), okresie (locative). Plural forms include okresy (nominative), okresów (genitive), okresom (dative), okresami (instrumental), okresach (locative).

Translation and equivalents: in English, okres can be translated as period, term, or era, depending on the context. The genitive okresu specifically marks “of the period” or related relationships.