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

The board Thursday also postponed decisions on a controversial hydro-excavation business in Homer Township and whether to create a land bank using federal pandemic relief funds. — Michelle Mullins, Chicago Tribune, 16 July 2026

In the thermal pool, guests lie or sit on underwater hydro-massage beds and seats while lumbar jets pummel the muscles most nicely. — Condé Nast, Condé Nast Traveler, 9 July 2026

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

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