hydro

1 of 2

noun (1)

hy·​dro ˈhī-(ˌ)drō 

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

Noun

Geothermal and wind energy require expensive infrastructure, and hydro dries up in the summer. — Lorela U. Sandoval, Christian Science Monitor, 25 June 2026

Renewable energy – primarily wind, solar and hydro powers – supplies about 27%, natural gas, 26%, and nuclear, 15%. — Alexa St. John, Los Angeles Times, 24 June 2026

Constellation operates a diverse regional power fleet comprising nuclear, natural gas, hydro, wind, solar, and geothermal assets. — Aman Tripathi, Interesting Engineering, 24 June 2026

Renewable energy – primarily wind, solar and hydro powers – supplies about 27%, natural gas, 26%, and nuclear, 15%. — Alexa St. John, Fortune, 23 June 2026

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

Rhymes for hydro

• acknow
• aglow
• ago
• airglow
• aloe
• altho
• although
• ammo
• backflow
• backhoe
• banjo
• barbeau

Kids Definition

hydro

noun

hy·​dro

ˈhī-drō

: hydroelectric power

Medical 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