Osmoottiset

Osmoottiset is the Finnish plural form of the adjective osmoottinen, meaning "osmotic" in English. It is used to describe phenomena, forces, devices or properties that are related to or produced by osmosis, the movement of solvent molecules through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration.

In scientific contexts the term appears in phrases such as osmoottiset paineet (osmotic pressures) and osmoottiset ilmiöt (osmotic phenomena). Osmotic pressure is a colligative property that affects the behaviour of solutions and is important in fields including cell biology, physiology and physical chemistry. In biology, osmoottiset vaikutukset influence water balance across cell membranes, tissue swelling, and the function of organs that regulate fluid and electrolyte homeostasis.

In engineering and technology, osmoottiset järjestelmät (osmotic systems) and osmoottiset kennot (osmotic or reverse-osmosis cells) are components of desalination, water purification and controlled-release devices. Materials described as osmoottiset typically involve semipermeable membranes or structures that permit selective solvent transport.

The word is primarily used in technical and scientific language in Finnish, and its root is shared with international terminology derived from osmosis. Usage may vary with context, applying to physical forces, engineered systems, or biological processes.