. "reverse osmosis"@en-us . . . "(chemistry) a method of producing pure water; a solvent passes through a semipermeable membrane in a direction opposite to that for natural osmosis when it is subjected to a hydrostatic pressure greater than the osmotic pressure"@en-us . . "0"^^ . "113528441"^^ . "0"^^ . . . "reverse osmosis"^^ . . . "13528441-n"^^ .