Suljetussa

Suljetussa is a Finnish grammar form, specifically the inessive singular of the adjective suljettu, meaning closed. It functions as an inflected form used to describe something that exists within a closed state or boundaries. In practice, suljetussa appears most often as part of phrases with a noun, such as suljetussa tilassa, suljetussa laatikossa, or suljetussa järjestelmässä, where the noun supplies the concrete meaning and suljetussa conveys the idea of being inside a closed condition.

Etymology and structure: suljetussa originates from the verb sulkea (to close) through the passive past participle suljettu (closed). The inessive suffix -ssa marks location or state “in” that condition, yielding suljetussa to express “in a closed [state/space].” Finnish adjectives decline to agree with case and number, so suljetussa will appear with a following noun in the same clause.

Usage: The form is common in technical, archival, legal, and scientific Finnish where describing containment or restricted access is important. It is not typically used as a standalone noun, but rather as an attribute modifying a noun in the inessive case. For example, you might say: Aine oli säilytettävä suljetussa laatikossa (The substance had to be stored in a closed box), Tutkimus was conducted in a suljetussa ympäristössä (in a closed environment), or Laite operates within a suljetussa järjestelmässä (a closed system).

See also: suljettu, sulkeutuminen, sulkeutua, sulkeutuminen.