IPA: /haɪˈdrɒpəθi/
KK: /haɪˈdrɒpəθi/
The practice of using water for healing purposes, either by drinking it or applying it to the body.
Hydropathy is often used as a natural treatment for various ailments.
Hydropathy is formed from "hydro-" (from Greek "hudor", meaning water) and "-pathy" (from Greek "pathos", meaning suffering or disease). The word refers to a method of treating diseases through the use of water.
Think of 'water' ('hydro-') being used to treat 'suffering' ('-pathy') — that's why hydropathy means treating ailments with water.