vuosissa

Vuosissa is a Finnish grammatical form meaning "in the years" or "during the years." It is the inessive plural form of the noun vuosi (year) and is used to indicate a location in time, typically when referring to a period that spans multiple years. It appears in formal writing, historical summaries, and statistical reports.

The form is commonly used with year ranges. For example, a statistician might refer to changes "vuosissa 2000–2005" (in the years 2000–2005) or a historical account might note developments "viime vuosissa" or "vuosissa 1990–1999." In everyday language, phrases like "viime vuosina" (in recent years) or "vuosien aikana" (during the years) are more common, but vuosissa may appear in more formal or technical contexts where precise time spans are emphasized.

Etymology and morphology: Vuosissa is formed from vuosi with the inessive plural suffix -ssa, yielding the sense "in the years." The singular inessive is vuodessa ("in the year"), and other cases use different endings, such as nominative plurals like vuodet. Finnish uses several time-related cases to express position in time, duration, and ranges.

See also: Finnish grammar; inessive case; time expressions in Finnish; date and range notation in Finnish.