noun, Physical Chemistry.
the force that a dissolved substance exerts on a semipermeable membrane, through which it cannot penetrate, when separated by it from pure solvent.
the pressure necessary to prevent osmosis into a given solution when the solution is separated from the pure solvent by a semipermeable membrane
osmotic pressure n.
The pressure exerted by the flow of water through a semipermeable membrane separating two solutions with different concentrations of solute.
- Osmotic shock
osmotic shock n. The rupture of bacterial or other cells in a solution following a sudden reduction in osmotic pressure; it is sometimes induced to release cellular components for biochemical analysis.
[oz-mee-uh s] /ˈɒz mi əs/ adjective, Chemistry. 1. of or containing in its lower valences. /ˈɒzməs/ adjective 1. of or containing osmium in a low valence state, esp the divalent state Also osmious /ˈɒzmɪəs/ adjective 1. another word for osmous
[oz-muh nd, os-] /ˈɒz mənd, ˈɒs-/ noun 1. any fern of the genus Osmunda, especially the royal fern. [oz-muh nd, os-] /ˈɒz mənd, ˈɒs-/ noun 1. a superior quality of iron, formerly used for fishhooks, arrowheads, etc.
[oz-muh nd, os-] /ˈɒz mənd, ˈɒs-/ noun 1. any fern of the genus Osmunda, especially the royal fern. /ɒzˈmʌndə/ noun 1. any fern of the genus Osmunda, such as the royal fern, having large spreading fronds: family Osmundaceae