Hydro Definition

hīdrō
hydros
noun
A place, such as a spa, where people can receive hydropathic treatments.
Webster's New World
Hydroelectric power.
Webster's New World
A hydroelectric power plant.
Webster's New World
(Canada, uncountable) Electrical power supply; specifically : electrical power provided by a utility (as a publicly-owned one)
I won't have lights until my house gets the hydro turned on.
Wiktionary

(UK, countable, dated) A spa.

Wiktionary
adjective
Hydroelectric.
Webster's New World
Wiktionary
prefix
Wiktionary
Liquid.
Hydrodynamics.
American Heritage
Hydrogen.
Hydrochloride.
American Heritage

(zoology) Hydrozoa.

Wiktionary
affix
Water.
Hydrostatics, hydrometer.
Webster's New World
Containing hydrogen.
Hydrocyanic acid.
Webster's New World

Other Word Forms of Hydro

Noun

Singular:
hydro
Plural:
hydros

Origin of Hydro

  • Greek hudro-, hudr- from hudōr wed-1 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek ὑδρο- (hydro-), from ὕδωρ (hydor, “water")

    From Wiktionary

  • From Ancient Greek ὕδωρ (hudōr, “water”).

    From Wiktionary

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