What does HYDRO stand for?

Hydrotherapy

Hydrotherapy, formerly called hydropathy and also called water cure, is a part of medicine and alternative medicine, in particular of naturopathy, occupational therapy and physiotherapy, that involves the use of water for pain relief and treatment. The term encompasses a broad range of approaches and therapeutic methods that take advantage of the physical properties of water, such as temperature and pressure, for therapeutic purposes, to stimulate blood circulation and treat the symptoms of certain diseases.

Hydrostatic

Pertaining to the principles of equilibrium of fluids

Hydrolynamic

Hydrologic Data Search, Retrieval and Order

Wated Aerodrome

Hydrogenium Ore