ˈhaɪdrəʊ

Definitions

1. noun

a compound of water with another substance, especially a salt, acid, or base.

“The chemist studied the properties of hydrochloric acid.”

2. prefix

relating to water or having water as a base.

“Hydroelectric power plants harness energy from moving water.”

3. adjective

relating to water or aqueous.

“Hydrophilic materials absorb water easily.”

4. adverb

in or relating to water.

“The hydro scheme was designed to minimize water usage.”