re verse osmoses

reverse osmosis

noun Chemistry.
the process in which pure water is produced by forcing waste or saline water through a semipermeable membrane.

Origin:
1950–55

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World English Dictionary
reverse osmosis
 
n
a technique for purifying water, in which pressure is applied to force liquid through a semipermeable membrane in the opposite direction to that in normal osmosis

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

reverse osmosis n.
The movement of a solvent in the opposite direction from osmosis in such a manner that the solvent moves from a solution of greater concentration through a membrane to a solution of lesser concentration.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
reverse osmosis  


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A method of producing pure water by forcing saline or impure water through a semipermeable membrane across which salts or impurities cannot pass. Reverse osmosis is used for water filtration, for desalinization of seawater, and in kidney dialysis machines.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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