Dictionary

1hydro

noun hy·dro \ˈhī-(ˌ)drō\
plural hydros

Definition of HYDRO

British
:  an establishment offering hydropathic treatment (as for weight loss) :  health spa

Origin of HYDRO

short for hydropathic establishment
First Known Use: 1882

2hydro

noun, often attributive

Definition of HYDRO

:  hydroelectric power

Origin of HYDRO

short for hydropower
First Known Use: 1916

hydro

noun hy·dro \ˈhī-(ˌ)drō\   (Medical Dictionary)
plural hydros

Medical Definition of HYDRO

British :  a hydropathic facility :  spa; also :  a hotel catering to people using such a facility

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