reverse osmosis


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

Examples of reverse osmosis in a Sentence

Recent Examples on the Web There are three common production methods: vacuum distillation, reverse osmosis, and arrested fermentation. Sarah Kloepple, Popular Mechanics, "The Science of Making Alcohol-Free Beer," 31 Dec. 2020 Enjoy fresh, clean water with this machine’s multi-step reverse osmosis process. Carla Sosenko, Popular Science, "The Best Walmart Black Friday deals: The best early deals and sales on TVs, laptops, kitchen appliances, and more," 11 Nov. 2020 Mitigation techniques exist, like reverse osmosis, flash detente and charcoal filtering, though their efficacy is not entirely clear. Esther Mobley,, "Many California wineries will make no wine this year because of wildfire smoke," 17 Oct. 2020 This filter uses reverse osmosis to remove harmful contaminants and then replaces beneficial minerals before releasing it back into your pipes, providing you with good tasting, clean water. Gabrielle Hondorp, Popular Mechanics, "The 5 Best Water Softeners to Tame the Hardest H2O," 14 Sep. 2020 And for Swegles’ Madson Wines label, which follows a low-intervention regimen, invasive processes like reverse osmosis aren’t an option. Esther Mobley,, "Rosé could be the solution to wildfire smoke damage in California vineyards," 20 Aug. 2020 Sure, there are other ways to mitigate smoke taint once the grapes are picked, such as a process called reverse osmosis, but the effectiveness is iffy. Esther Mobley,, "Rosé could be the solution to wildfire smoke damage in California vineyards," 20 Aug. 2020 Other assets of the house include heated sidewalks, a full-house generator and a reverse osmosis water filter. Judy Rose, Detroit Free Press, "Architect, sculptor designed $1.9M Bloomfield Hills home for his family," 6 June 2020 All 75 mg of caffeine in each 11.5-ounce can is extracted from tea leaves and then infused with water purified by reverse osmosis. Caleb Wiegandt, The Courier-Journal, "Caffeinated sparkling water? Yes, it exists. And it was invented right here in Louisville," 2 Mar. 2020

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.

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First Known Use of reverse osmosis

1921, in the meaning defined above

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Time Traveler for reverse osmosis

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The first known use of reverse osmosis was in 1921

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Last Updated

17 Jan 2021

Cite this Entry

“Reverse osmosis.” Dictionary, Merriam-Webster, Accessed 25 Jan. 2021.

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