Filtreras

Filtreras is the present passive form of the Swedish verb filtrera, meaning “to filter.” It indicates that the subject undergoes the action of filtration, usually performed by an external agent or mechanism. In many contexts, filtreras is used to describe processes rather than who performs them.

In Swedish, the present passive is formed by adding the suffix -s to the present tense form of the verb. The active present tense of filtrera is filtrerar, so filtreras is derived from that form. Other related forms include filtrerade for the past tense active, filtrerades for the past passive, and filtrerat as the supine/participial form used in perfect constructions.

Examples: Vattnet filtreras genom ett kolfilter. Resultatet filtreras för att ta bort oönskade partiklar. Datan filtreras innan analysen körs. These examples show how the passive voice emphasizes the process itself rather than the agent performing the filtration.

Usage and nuance: Filtreras is common in technical and scientific writing, as well as in computing and data processing, where it is natural to describe procedures and systems that remove unwanted components. Distinguishing filtreras (is filtered) from filtrerar (filters) helps clarify whether the emphasis is on the process or the actor responsible for the filtration.

See also: filter (process), filtration, passive voice in Swedish grammar.