early 13c., from Anglo-Fr. remedie, O.Fr. remede, from L. remedium "a cure, remedy, medicine" from re-, intensive prefix (or perhaps lit., "again"), + mederi "to heal" (see medical). The verb is attested from early 15c.
remedy rem·e·dy (rěm'ĭ-dē) n. Something, such as medicine or therapy, that relieves pain, cures disease, or corrects a disorder. v.rem·e·died, rem·e·dy·ing, rem·e·dies To relieve or cure a disease or disorder.