Well one Latin root that means water is aqua.
"Hydro" root means "water"
If you mean aquarium, the root is aqua- Latin for water.
The root word for "aquarium" is "aqua," which is Latin for water.
Aquaticus, or or relating to water, from aqua, meaning water.
"Aqua" itself is a root meaning water...another root that means water is "Hydro" if that's what your talking about?
The root of the word is aqu- its feminine, so it would be aqua in the singular nominative and so on(:
Hydra are words concerning water such as...hydrophobia, dehydrate, hydrofoil, hydroelectric, hydraulic and hydrogen.
Hydroamplusnoctophobia. (root latin)
Hydro means water in Latin
latin
That is a trick question because the root phone is a greek AND a latin root.