Is`chi·ad'ic (ĭs`kĭ*ăd'ĭk) adjective [ Latin ischiadicus , Greek 'ischiadoko`s , from 'ischi`on the hip joint, hip or loin. Confer Sciatic .] (Anat.) Ischial. [ R.] Ischiadic passion or disease (Medicine) , ... Found on http://www.encyclo.co.uk/webster/I/100