noun, noun which may take the genitive case particle 'no'
hydrotherapy
Medical term for treatment using water, such as baths, whirlpools, or aquatic exercises.
水治療法はリハビリテーションでよく使われる。
Hydrotherapy is often used in rehabilitation.
Compound of 水 (water) + 治療 (treatment) + 法 (method).