Ausspülen

Ausspülen is a German verb that means to rinse out or flush out a substance with a liquid, usually water. The prefix aus- conveys removal, and spülen means to rinse or wash. The noun form is das Ausspülen. The term is used across different contexts to describe the action of washing away or removing material by liquid flow.

In everyday language, Ausspülen describes actions such as rinsing a mouth after brushing, washing a container before reuse, or flushing debris from a surface. It can refer to both cleaning processes and the removal of loose material or residues by washing.

In soil science and hydrology, Ausspülen denotes the movement of dissolved substances through soil or rock by percolating water. This leaching process can transport nutrients, minerals, or contaminants from one layer to another, influencing soil fertility and groundwater quality. It is related to, but distinct from, erosion, which involves the removal of solid material.

In laboratory, medical, and industrial settings, Ausspülen describes flushing systems, vessels, or lines with a solvent or water to remove residues and ensure cleanliness or prevent cross-contamination. The choice of liquid depends on the materials involved and the desired level of cleanliness.

Related terms include Auswaschung (leaching) and Spülen (rinsing). The exact meaning of Ausspülen is determined by context, ranging from simple cleaning to geochemical transport processes.