Search Result for "reverse osmosis":
Wordnet 3.0

NOUN (1)

1. (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; 



WordNet (r) 3.0 (2006):

reverse osmosis
    n 1: (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