reverse osmosis

noun
|Updated on: 22 Jul 2018

Definition of reverse osmosis

: the movement of fresh water through a semipermeable membrane when pressure is applied to a solution (such as seawater) on one side of it

Recent Examples of reverse osmosis from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'reverse osmosis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of reverse osmosis

1921

in the meaning defined above

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