light water


Definition of light water

: water sense 1a — compare heavy water

Examples of light water in a Sentence

Recent Examples on the Web The world’s existing fleet of light water reactors (LWRs) use fuel enriched to about 5% U-235. James Conca, Forbes, 6 Oct. 2021 Today, almost all working nuclear power plants use light water reactors, meaning a central nuclear fuel reaction cooled by regular, flowing water. Caroline Delbert, Popular Mechanics, 5 Jan. 2021 The Energy Department recently awarded the first $160 million for a first-of-its-kind advanced reactor demonstration program that aims for companies to build two non-light water reactors that can be operational within seven years. Josh Siegel, Washington Examiner, 19 Nov. 2020 Garrish also touted success in promoting exports of traditional large light water nuclear projects that the U.S. has struggled to build domestically in recent decades. Josh Siegel, Washington Examiner, 29 Nov. 2020 Notably, Poland’s focus is on building traditional large light water nuclear projects that the U.S. has struggled to build domestically in recent decades, not the smaller reactors that are seen as the (potentially cheaper) future of the industry. Abby Smith, Washington Examiner, 19 Oct. 2020 Oklo’s proposal represents the nation’s first application for a non-light water reactor to the Nuclear Energy Regulatory Commission. Josh Siegel, Washington Examiner, 18 Mar. 2020 NuScale uses a light water reactor—by far the most common type of reactor in commercial nuclear power plants—but that’s about where the similarities end. Daniel Oberhaus, Wired, 13 Dec. 2019 There were indications at Yongbyon of continued development of a light water reactor and the construction and renovation of buildings at the site’s nuclear fuel-rod fabrication plant, the report said. Laurence Norman, WSJ, 21 Aug. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'light water.' 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 light water

1933, in the meaning defined above

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The first known use of light water was in 1933

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Dictionary Entries Near light water

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Statistics for light water

Last Updated

16 Oct 2021

Cite this Entry

“Light water.” Dictionary, Merriam-Webster, Accessed 16 Oct. 2021.

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