Source : Webster's Revised Unabridged Dictionary (1913)

Kneippism \Kneipp"ism\, n. Also Kneipp's \Kneipp's\, or Kneipp
\Kneipp\, cure \cure\
   Treatment of disease by forms of hydrotherapy, as walking
   barefoot in the morning dew, baths, wet compresses, cold
   affusions, etc.; -- so called from its originator, Sebastian
   Kneipp (1821-97), a German priest.