Rous·sil·lon 
(r-sē-yôɴ)
(r-sē-yôɴ) A historical region of southern France bordering on Spain and the Mediterranean Sea. Originally inhabited by Iberians, it became part of Roman Gaul after c. 121 BC and later changed hands many times, eventually becoming a Spanish possession that was transferred to France by the Treaty of the Pyrenees (1659).
- Indo-European root: stā-
- Indo-European root: stāi-
- Indo-European root: s(w)e-
- Indo-European root: sweid-
- Indo-European root: s(w)eks
- Indo-European root: swel-
- Indo-European root: swen-
- Indo-European root: swep-
- Indo-European root: swer-
- Indo-European root: swesor-
- Indo-European root: swo-
- Indo-European root: swād-
- Indo-European root: syū-
- Indo-European root: sā-
- Indo-European root: sāg-
- Indo-European root: sāwel-
- Indo-European root: sē-
- Indo-European root: sēmi-
- Indo-European root: sū-
- Indo-European root: tag-
- Indo-European root: tauro-
- Indo-European root: tegu-
- Indo-European root: tek-
- Indo-European root: teks-
- Indo-European root: telə-