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hydro-

1
  1. a combining form meaning “water,” used in the formation of compound words:

    hydroplane; hydrogen.



hydro-

2
  1. a combining form representing hydrogen in compound words, denoting especially a combination of hydrogen with some negative element or radical:

    hydrobromic.

hydro

3

[ hahy-droh ]

noun

plural hydros
  1. Informal. hydroelectric power.
  2. Informal. hydroplane.
  3. British.
    1. a bathhouse, hotel, or resort catering to people taking mineral-water health cures; spa.
    2. an establishment furnishing hydrotherapy.

adjective

  1. Informal. of, relating to, or furnishing water, water power, or hydroelectricity:

    funds for new hydro projects.

Hydro

1

/ ˈɪəʊ /

noun

  1. (esp in Canada) a hydroelectric power company or board
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

hydro-

2

combining_form

  1. indicating or denoting water, liquid, or fluid

    hydrodynamics

    hydrolysis

  2. indicating the presence of hydrogen in a chemical compound

    hydrochloric acid

  3. indicating a hydroid

    hydrozoan

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

hydro

3

/ ˈɪəʊ /

noun

  1. (esp formerly) a hotel or resort, often near a spa, offering facilities for hydropathic treatment
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

hydro

4

/ ˈɪəʊ /

adjective

  1. short for hydroelectric
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. a Canadian name for electricity when it is supplied to a residence, business, institution, etc
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

  1. A prefix that means: “water” (as in hydroelectric ) or “hydrogen,” (as in hydrochloride ).
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Word History and Origins

Origin of hydro-1

< Greek, combining form of ýō water

Origin of hydro-2

1880–85; by shortening of compounds with hydro- 1 ( -o ); hydro ( def 4 ) hydro- 1 analyzed as an adj.
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Word History and Origins

Origin of hydro-1

from Greek ܻō water
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Example Sentences

Examples have not been reviewed.

The highlight is set to be her homecoming at the OVO Hydro in Glasgow on 12 December.

From

Zengamina Hydro has secured a large investment to help them expand to more villages and join up to the national grid.

From

They're focusing on so-called run-of-river hydroelectric models like at Zengamina and the continent has an abundance of "untapped hydro potential" she says.

From

Last year, after the Czech Republic named South Korea’s Korea Hydro & Nuclear Power as the preferred bidder for its own major nuclear power project, U.S.-based nuclear power company Westinghouse filed a lawsuit against Korea Hydro alleging intellectual property violations.

From

The country also has an abundance of renewable hydro electricity, which accounts for 88% of its production capacity.

From

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