Webster’s Revised Unabridged Dictionary · 1913
Sciatic
Sci·at′ic, a. [F. sciatique, LL. sciaticus, from L. ischiadicus, Gr. ἰσχιαδικός. See Ischiadic.] (Anat.) Of or pertaining to the hip; in the region of, or affecting, the hip; ischial; ischiatic; as, the sciatic nerve, sciatic pains.
Sci·at′ic, n. [Cf. F. sciatique.] (Med.) Sciatica.