Filtreerida

Filtreerida is Estonian verb meaning to filter. The primary sense is to separate undesired components from a mixture by passing it through a physical or porous barrier, such as a filter, sieve, or membrane. The term is also used metaphorically to describe the action of selecting or excluding items by applying criteria.

Filtration is used in many fields and everyday life. In science and industry, it is employed for water treatment, air purification, chemical processing, and laboratory workflows. In daily routines, filtration occurs when coffee or tea is strained to remove solids. In information technology and data processing, filtering means removing unwanted data or extracting items that meet predefined conditions, as in spam filtering, search result refinement, or signal processing to reduce noise.

In Estonian grammar, the verb is transitive and follows a typical -ida verb pattern. The infinitive is filtreerida, and related forms include filtreerib (present tense, third person singular), filtreeris (past), and filtreerimine (the process of filtering). The noun for the device used to perform filtration is filter, while the process noun is filtreerimine. The language also uses derived forms such as filtreeriv (filtering) and filtreerija (filtering device or agent, depending on context).