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Here are all the possible meanings and translations of the word RO. Princeton's WordNet(0.00 / 0 votes)Rate this definition: Ro(noun) an artificial language for international use that rejects all existing words and is based instead on an abstract analysis of ideas.
Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove larger particles from drinking water. In reverse osmosis, an applied pressure is used to overcome osmotic pressure, a colligative property, that is driven by chemical potential, a thermodynamic parameter.everse osmosis can remove many types of molecules and ions from solutions, including bacteria, and is used in both industrial processes and the production of potable water. The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side.