sci·at·i·ca (sī-āt'ĭ-kə) n. Pain along the sciatic nerve usually caused by a herniated disk of the lumbar region of the spine and radiating to the buttocks and to the back of the thigh.
[Middle English, from Medieval Latin, from feminine of sciaticus, of the hip; see sciatic.]
Chronic pain in the hip and upper leg caused by irritation of a large nerve — the sciatic nerve — that runs through the pelvis and down the back of the thigh.
1398, from M.L. sciatica, in sciatica passio "sciatic disease," from fem. of sciaticus "sciatic," from L. ischiadicus "of pain in the hip," from Gk. iskhiadikos, from iskhias (gen. iskhiados) "pain in the hips," from iskhion "hip joint." Sciatic (adj.) is attested from 1547.
Main Entry: sci·at·i·ca Pronunciation: sI-'at-i-k& Function: noun : pain along the course of a sciatic nerve especially in the backof the thigh caused by compression, inflammation, or reflex mechanisms; broadly: pain in the lower back, buttocks, hips, or adjacent parts
sciatica sci·at·i·ca (sī-āt'ĭ-kə) n. Pain along the sciatic nerve that radiates from the lower back to the buttocks and back of the thigh and is usually caused by a herniated disk of the lumbar region of the spine.