1. [Medicina] ciatalgia; dor ciática; dor no nervo ciático ◼ Sinônimos Inglês sciatica; sciatic neuritis; Meaning Sciatica refers to a pain felt along the length of the sciatic nerve. The pain is usually felt in the buttock where it radiates down the back of the leg. At some time, up to 40% of people experience pain caused by compression of this nerve.