The Collaborative International Dictionary of English v.0.48:
Hydropathic \Hy`dro*path"ic\, Hydropathical \Hy`dro*path"ic*al\, a. Of or pertaining to hydropathy. [1913 Webster]WordNet (r) 3.0 (2006):
hydropathic adj 1: of or relating to hydropathy or its administration; "hydropathic treatments"