Ischiadic \Is`chi*ad"ic\, a. [L. ischiadicus, Gr. ?, fr. ? the hip joint, hip or loin. Cf. {Sciatic}.] (Anat.) Ischial. [R.] {Ischiadic} {passion or disease} (Med.), a rheumatic or neuralgic affection of some part about the hip joint; -- called also {sciatica}.