adjective
Clipping of hydroelectric.
Clipping of hydroponic.
Alternative form of hydro- (“water”).
noun
(uncountable) Clipping of hydropower (“hydroelectric power”).
(uncountable) Clipping of hydroelectricity.
(Canada, uncountable) electrical power supply; specifically, electrical power provided by a utility (as a publicly-owned one); payment or bills for this.
(British, countable, dated) A spa.
(countable, aviation, obsolete) Abbreviation of hydroaeroplane.
(uncountable) Abbreviation of hydrodynamics.