Hydro
ahd-5
noun.
Hydroelectric power.
noun.
A hydroelectric power plant.
adjective.
Hydroelectric.
The Century Dictionary and Cyclopedia
An element in many compound words of Greek origin, meaning ‘water.’ In chemical compounds other than
hydrogen
it usually represents
hydrogen.
the GNU version of the Collaborative International Dictionary of English
noun.
A hydro-aëroplane.
noun.
hydroelectric power; -- also used attributively.
Wiktionary, Creative Commons Attribution/Share-Alike License
adjective.
hydroelectric
noun.
hydroelectric
power
noun.
electrical power supply; specifically : electrical power provided by a utility (as a publicly-owned one)
noun.
A
spa
.
Word Usage
"Instead of steel armor, M. Tommasi has a new invention which he calls hydro-metallic plating."