- the tendency of a fluid, usually water, to pass through a semipermeable membrane into a solution where the solvent concentration is higher, thus equalizing the concentrations of materials on either side of the membrane.
- the diffusion of fluids through membranes or porous partitions.Compare endosmosis, exosmosis.
Origin of osmosis
Examples from the Web for osmotic
The ascent is assisted by the osmotic absorption of water at the root and by evaporation at the leaves.The Romance of Plant Life|G. F. Scott Elliot
Instantly the structure, pivoting downward on its wall-socket, plunged Quest to his waist in the osmotic solution.Astounding Stories of Super-Science January 1930|Victor Rousseau
The converse is the case when a solution of osmotic pressure higher than the blood is injected.
More frequently the osmotic growth consists of a number of cells instead of one large cell.
In this way we are able to determine the osmotic pressure of any solution.
British Dictionary definitions for osmotic
Word Origin for osmosis
Word Origin and History for osmotic
1867, Latinized from osmose (1854), shortened from endosmosis (1830s), from endosmose "inward passage of a fluid through a porous septum" (1829), from French endo- "inward" + Greek osmos "a thrusting, a pushing," from stem of othein "to push, to thrust," from PIE *wedhe- "to push, strike" (cf. Sanskrit vadhati "pushes, strikes, destroys," Avestan vadaya- "to repulse"). Figurative sense is from 1900. Related: Osmotic (1854, from earlier endosmotic).