Hydro
adj, noun, slang ·Moderate ·High school level
Definitions
- 1 Clipping of hydropower (“hydroelectric power”). abbreviation, alt-of, clipping, uncountable
- 2 Clipping of hydroelectricity. abbreviation, alt-of, clipping, uncountable
- 3 electrical power supply; specifically, electrical power provided by a utility (as a publicly-owned one); payment or bills for this. Canada, uncountable
"I won't have lights until my house gets the hydro turned on."
- 4 A spa. British, countable, dated
"She almost lived at hotels and hydros, last year, but that isn't pleasant for her."
- 5 Abbreviation of hydroaeroplane. abbreviation, alt-of, countable, obsolete
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- 6 Abbreviation of hydrodynamics. abbreviation, alt-of, uncountable
- 7 Clipping of hydrocodone. abbreviation, alt-of, clipping, slang, uncountable
"Dave, get some hydro or some codeine and just extract the good stuff from the APAP. Oxy has the stronger side effects, but with hydro/codeine you're almost guaranteed 100% nice floaties."
- 1 Clipping of hydroelectric. abbreviation, alt-of, clipping, not-comparable
- 2 Clipping of hydroponic. abbreviation, alt-of, clipping, not-comparable
"hydro watercress"
- 3 Alternative form of hydro- (“water”). alt-of, alternative, not-comparable
"hydro massage"
Example
More examples"For the sheer pleasure of speed, the aqua, or hydro, karts probably have all fun craft beat."
Etymology
From prefix hydro-, from Ancient Greek ὕδωρ (húdōr, “water”). By surface analysis, hydr- (“water”) + -o-. Canadian sense "electricity" from the fact that hydroelectricity is the prevalent source of electricity in much of Canada and many electric companies have the word "Hydro" in their names.
Related phrases
More for "hydro"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.