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

And some projects like hydro dams may be permanently shelved, hindering Nepal’s ambitions to diversify its economy by exporting energy to neighbors like India and Bangladesh. — Stephanie Yang, CNN Money, 11 Sep. 2026

Under that program, the NYPA buys electricity on the wholesale market on Lake Mariner’s behalf—a blend of hydro, nuclear, natural gas, wind, and solar—and waives delivery surcharges in exchange. — Petala Ironcloud, ArsTechnica, 7 Sep. 2026

There’s a sumptuous spa, which includes a hydro pool, Turkish steam bath and treatment rooms, and a high-tech outdoor gym on one of the lower lawns. — Condé Nast, Condé Nast Traveler, 3 Sep. 2026

Many of them are workers believed to be trapped inside a dozen hydro-power plants. — Greg Dixon, NPR, 1 Sep. 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