H2O
noun
: 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
Bryan WalshExamples of H2O in a Sentence
Recent Examples on the Web
Beyond its foundational role in farming and hydropower, H2O has become a critical resource in AI data centers, used to cool servers and prevent them from overheating.
—Sasha Rogelberg, Fortune, 23 Apr. 2026
In addition to waking up your nervous system and digestion, starting with a big glass of H2O sets you up for a more hydrated day.
—Kate Donovan, Martha Stewart, 8 Apr. 2026
Each week features a unique theme — from The Circus Comes to Town and Out of this World to H2O Olympics and Holiday Hoedown — while core camp traditions stay consistent to help campers build confidence, friendships and life skills.
—Post-Tribune, Chicago Tribune, 16 Mar. 2026
Last but not least, don’t underestimate the importance of sipping on good old H2O throughout the day.
—Michele Ross, SELF, 3 Mar. 2026
In every variety of ice, H2O molecules interact, with weak connections called hydrogen bonds forming between one oxygen and one hydrogen atom in separate molecules.
—Meghan Bartels, Scientific American, 23 Jan. 2026
For simple hydration, H2O of all kinds works A-OK.
—Karla Walsh, Better Homes & Gardens, 16 Jan. 2026
Inside the Paddock Club, VIP guests will discover Bioderma’s Sensibio H2O micellar water, while fans in the Koval Zone can explore the brand’s barrier-strengthening essentials, including Atoderm Shower Oil and Atoderm Intensive Balm.
—Melinda Sheckells, HollywoodReporter, 16 Nov. 2025
Launched in October 2024 as a pilot effort, the H2O initiative provides transitional housing assistance, move-in support, home modifications and case management to help individuals with serious mental illness stay in stable housing and on treatment plans.
—Joan Meiners, AZCentral.com, 29 Sep. 2025
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Sasha Rogelberg, Fortune, 23 Apr. 2026
In addition to waking up your nervous system and digestion, starting with a big glass of H2O sets you up for a more hydrated day.
—Kate Donovan, Martha Stewart, 8 Apr. 2026
Each week features a unique theme — from The Circus Comes to Town and Out of this World to H2O Olympics and Holiday Hoedown — while core camp traditions stay consistent to help campers build confidence, friendships and life skills.
—Post-Tribune, Chicago Tribune, 16 Mar. 2026
Last but not least, don’t underestimate the importance of sipping on good old H2O throughout the day.
—Michele Ross, SELF, 3 Mar. 2026
In every variety of ice, H2O molecules interact, with weak connections called hydrogen bonds forming between one oxygen and one hydrogen atom in separate molecules.
—Meghan Bartels, Scientific American, 23 Jan. 2026
For simple hydration, H2O of all kinds works A-OK.
—Karla Walsh, Better Homes & Gardens, 16 Jan. 2026
Inside the Paddock Club, VIP guests will discover Bioderma’s Sensibio H2O micellar water, while fans in the Koval Zone can explore the brand’s barrier-strengthening essentials, including Atoderm Shower Oil and Atoderm Intensive Balm.
—Melinda Sheckells, HollywoodReporter, 16 Nov. 2025
Launched in October 2024 as a pilot effort, the H2O initiative provides transitional housing assistance, move-in support, home modifications and case management to help individuals with serious mental illness stay in stable housing and on treatment plans.
—Joan Meiners, AZCentral.com, 29 Sep. 2025
Cite this Entry
“H2O.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/H2O. Accessed 1 May. 2026.
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