: water sense 1a
American lawns and gardens drink up H2O at alarming rates, especially in the dry West, where more than 50% of residential water is used for landscaping.Bryan Walsh

Examples of H2O in a Sentence

Recent Examples on the Web
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Ten outdoor hot tubs — four located near the main pools, two in Spice H2O, and four more in the exclusive areas of Vibe Beach Club and the Haven — were certainly put to good use. Shelby Wayte, Travel + Leisure, 8 Sep. 2024 Published July 16 in the journal Nature, the findings were the first time that water in its molecular form, H2O, had been found in physical lunar samples. Eric Lagatta, USA TODAY, 12 Aug. 2024 This recent discovery, however, marks the first time scientists have found whole molecules of H2O in lunar samples. Margherita Bassi, Smithsonian Magazine, 6 Aug. 2024 The business of boosting one’s H2O is projected to reach $3.26 billion by 2031. Tribune News Service, The Mercury News, 30 July 2024 Oatmeal Hearty oatmeal is a comforting breakfast staple and an excellent way to increase your H2O intake. Joey Skladany, Better Homes & Gardens, 21 June 2024 Read: Playing God with the atmosphere Climate change has disrupted the water cycle, speeding up every phase in the ancient, endless process that circulates H2O among the oceans, atmosphere, and land. Marina Koren, The Atlantic, 20 June 2024 Ice nucleation begins when, by chance, random jiggling arranges a small patch of triangular H2O molecules into a hexagonal ice structure. Quanta Magazine, 17 June 2024 Hey, this is Southern California—the commitment to H2O hydration runs deep. John Vorwald, Robb Report, 15 June 2024

Word History

First Known Use

1879, in the meaning defined above

Time Traveler
The first known use of H2O was in 1879

Dictionary Entries Near H2O

H2

H2O

H3

Cite this Entry

“H2O.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/H2O. Accessed 15 Nov. 2024.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!