tiedostossa

Tiedostossa is the Finnish inessive singular form of the noun tiedosto, meaning "in the file" or "inside the file." In Finnish grammar the inessive case, marked by the suffix -ssa or -ssä, expresses location within something; tiedostossa therefore denotes that some object, data or action is located inside a particular file.

The term appears frequently in computing and everyday contexts. In IT and programming it is used when referring to contents, metadata or errors contained within a file (e.g., "virhe tiedostossa" — "an error in the file"). In non-technical usage it can describe physical or abstract files, such as records or documents kept in a folder or archive.

Morphologically, tiedosto is a consonant-stem noun and follows regular Finnish declension patterns; its inessive singular is formed by adding -ssa to the stem. Related case forms include tiedostosta ("from the file," elative) and tiedostoissa ("in the files," inessive plural). Understanding tiedostossa requires familiarity with Finnish case endings and the concept of locative cases, which encode spatial and figurative relationships without prepositions.

Because it is a specific inflected form rather than a lemma, tiedostossa is typically discussed in grammar descriptions, language learning materials and technical documentation where precise locative meaning is needed.