- 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
Historical Examples of osmotic
Now, if the 17.33% solution had an osmotic pressure of P mm.
If not kept moist they could not serve as osmotic membranes.Elementary Zoology, Second Edition
Vernon L. Kellogg
Osmotic pressure plays a most important rle in the arena of life.
In the salt solution the osmotic pressure of the sugar is zero.
De Vries has used this phenomenon for the measurement of osmotic tension.
Word Origin for osmosis
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).