The Collaborative International Dictionary
Hydrogalvanic
Hydrogalvanic \Hy`dro*gal*van"ic\, a. [Hydro-, 1 + galvanic.] Pertaining to, produced by, or consisting of, electricity evolved by the action or use of fluids; as, hydrogalvanic currents. [R.]
Wiktionary
hydrogalvanic
a. Pertaining to, produced by, or consisting of, electricity evolved by the action or use of fluids.