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

/ ˈhaɪdrəʊ /

noun

1. (esp in Canada) a hydroelectric power company or board

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

hydro

³

/ ˈhaɪdrəʊ /

noun

1. (esp formerly) a hotel or resort, often near a spa, offering facilities for hydropathic treatment

hydro

⁴

/ ˈhaɪdrəʊ /

adjective

1. short for hydroelectric

noun

1. a Canadian name for electricity when it is supplied to a residence, business, institution, etc

hydro–

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

Word History and Origins

Origin of hydro-¹

< Greek, combining form of hýdōr water

Origin of hydro-²

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

Word History and Origins

Origin of hydro-¹

from Greek hudōr water

Example Sentences

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

From BBC

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 BBC

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 Los Angeles Times

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

From BBC

In 2014, McManus was invited to sing with Rod Stewart at the Hydro in Glasgow to celebrate 50 years of the Lisbon Lions - the Celtic team that won the European Cup in Portugal in 1967.

From BBC