The Collaborative International Dictionary
Galvanotropism
Galvanotropism \Gal`va*not"ro*pism\, n. [Galvanic + Gr. ? to turn.] (Bot.) The tendency of a root to place its axis in the line of a galvanic current.
Wiktionary
galvanotropism
n. (context biology English) Any movement or alignment of an organism with respect to an electric field