hydro

1 of 2

noun (1)

hy·​dro ˈhī-(ˌ)drō How to pronounce hydro (audio)
plural hydros
British
: an establishment offering hydropathic treatment (as for weight loss) : health spa

hydro

2 of 2

noun (2)

often attributive
: hydroelectric power

Examples of hydro in a Sentence

Recent Examples on the Web
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
While many tech and data center companies are investing in renewable energy and seeking low-carbon sources such as hydro and nuclear power, the need for speedy access to electricity is driving growth in another energy source: mobile generators and turbines powered by fossil fuels. Jeff Young, MSNBC Newsweek, 6 May 2025 Beyond that, both countries have invested heavily in renewables, with Portugal supplying about half of its power from wind and hydro, having closed its last coal plant in 2021. John Timmer, ArsTechnica, 28 Apr. 2025 That's useful because hydro plants need very little in the way of an external power supply to start operating. John Timmer, ArsTechnica, 28 Apr. 2025 Miners are increasingly co-locating with wind, solar, and hydro projects, acting as flexible demand-response partners and absorbing excess energy when supply outpaces demand and powering down during peak consumption to relieve pressure on the grid. Susie Violet Ward, Forbes.com, 31 Mar. 2025 See All Example Sentences for hydro

Word History

Etymology

Noun (1)

short for hydropathic establishment

Noun (2)

short for hydropower

First Known Use

Noun (1)

1882, in the meaning defined above

Noun (2)

1916, in the meaning defined above

Time Traveler
The first known use of hydro was in 1882

Cite this Entry

“Hydro.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydro. Accessed 15 May. 2025.

Kids Definition

hydro

noun
hy·​dro
ˈhī-drō
: hydroelectric power

Medical Definition

hydro

noun
hy·​dro ˈhī-(ˌ)drō How to pronounce hydro (audio)
plural hydros
British
: a hydropathic facility : spa
also : a hotel catering to people using such a facility
Last Updated: - Updated example sentences
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