Meaning of hydro

hy•dro

1. hydroelectric power.
2. hydroplane.
1. a bathhouse, hotel, or resort catering to people taking mineral-water health cures; spa.
2. an establishment furnishing hydrotherapy.

1. of, pertaining to, or furnishing water, water power, or hydroelectricity: funds for new hydro projects.

hydro-

1. a combining form meaning “water,” used in the formation of compound words: hydroplane; hydrogen.

hydro-

1. a combining form representingin compound words, denoting esp. a combination of hydrogen with some negative element or radical: hydrobromic.