hy·dro
ˈhī-(ˌ)drō 
plural hydros
British
: an establishment offering hydropathic treatment (as for weight loss) : health spa
Examples of hydro in a Sentence
Recent Examples on the Web
ArsTechnica, 22 May 2026
More serious cases will require hydro jetting from a plumbing expert to break through all of the buildup.
—Emily Benda Gaylord, The Spruce, 21 May 2026
Clean energy sources—including wind, solar, nuclear, and hydro—now make up close to 40% of worldwide power generation, representing remarkable growth on the supply side.
—Jordan Blum, Fortune, 19 May 2026
The unique micro-hydro testbed has reportedly become a platform for industry-wide advancements.
—Georgina Jedikovska, Interesting Engineering, 15 May 2026
See All Example Sentences for hydro
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Noun
The major change compared to last year’s data is that the surge in hydro moved it slightly ahead of solar, which had passed it as a source of US electricity in 2025.
—ArsTechnica, 22 May 2026
More serious cases will require hydro jetting from a plumbing expert to break through all of the buildup.
—Emily Benda Gaylord, The Spruce, 21 May 2026
Clean energy sources—including wind, solar, nuclear, and hydro—now make up close to 40% of worldwide power generation, representing remarkable growth on the supply side.
—Jordan Blum, Fortune, 19 May 2026
The unique micro-hydro testbed has reportedly become a platform for industry-wide advancements.
—Georgina Jedikovska, Interesting Engineering, 15 May 2026
See All Example Sentences for hydro
Cite this Entry
“Hydro.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydro. Accessed 27 May. 2026.
Copy CitationMedical Definition
hydro
noun
hy·dro
ˈhī-(ˌ)drō
plural hydros
British
: a hydropathic facility : spa
also
: a hotel catering to people using such a facility
Love words? Need even more definitions?
Merriam-Webster unabridged
