reverse osmosis

noun

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

Examples of reverse osmosis in a Sentence

Recent Examples on the Web
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The base is reverse osmosis water with yuzu, ginger, and honey, which balances out the usual abrasive taste of a wellness shot. Kate Kassin, Bon Appetit Magazine, 30 Apr. 2026 The process would remove heavy metals and use industrial reverse osmosis technology. Arcelia Martin, San Antonio Express-News, 27 Apr. 2026 For consumers, the best choice is a reverse osmosis system, which forces water through a semipermeable membrane that captures up to 99% of contaminants, Jones said. Sandee Lamotte, CNN Money, 23 Apr. 2026 Cesium can be removed from water, however, with methods such as reverse osmosis. Stephanie Pappas, Scientific American, 10 Apr. 2026 See All Example Sentences for reverse osmosis

Word History

First Known Use

1921, in the meaning defined above

Time Traveler
The first known use of reverse osmosis was in 1921

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Cite this Entry

“Reverse osmosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reverse%20osmosis. Accessed 7 May. 2026.

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