Poisto

Poisto is a Finnish noun meaning removal or elimination, derived from the verb poistaa, “to remove.” It is used to describe the act of taking something away, the result of that act (removal), or the process of subtraction or erasure in different contexts.

In everyday language, poisto covers removing objects, deleting text, or cancelling plans. In mathematical or logical discussion, it can denote subtraction or the difference between quantities. In editing or publishing, poisto refers to removing material from a text. The term thus functions as a general label for the act or result of removing something.

In technical and engineering contexts, poisto often refers to the removal or expulsion of substances or energy. In building services and environmental engineering, poisto can denote exhaust air and its handling, typically through ventilation systems such as poistoilma (exhaust air) and poistoilmanvaihto (exhaust ventilation). The concept is also seen in medical and industrial settings where fluids, gases, or other materials are removed via suction or drainage equipment, though specific terminology depends on the domain.

Etymology: poisto is formed from poistaa, the verb meaning “to remove.” Related terms include poistaminen (the act of removal) and poisto, which functions across disciplines to denote the act, method, or result of removing something.

See also: poistoilma, poistoilmanvaihto, poistaminen, poistanen.