reverse osmosis

https://doi.org/10.1351/goldbook.RT06893
Liquid-phase pressure-driven separation process in which applied transmembrane pressure causes selective movement of solvent against its @O04344@ difference.
Source:
PAC, 1996, 68, 1479. (Terminology for membranes and membrane processes (IUPAC Recommendations 1996)) on page 1489 [Terms] [Paper]