IPA: /haɪˈdrəʊθɛrəpi/
KK: /haɪˈdroʊˌθɛrəpi/
The use of water for treating medical conditions, often involving baths or other water-based therapies.
Many people find relief from pain through hydrotherapy sessions.
Hydrotherapy → It is formed from "hydro-" (from Greek "hydor", meaning water) and "therapy" (from Greek "therapeia", meaning treatment or healing). The word refers to treatment or healing using water.
Think of 'water' ('hydor') being used for 'treatment' ('therapeia') — that's why hydrotherapy means healing through water.