Pronunciation: (kôr"dl-yâr'uz, -âr'-, kôr-dil'ur-uz; Sp. kôr"&thslash;ē-ye'räs for 1),[key] —n. 1. a mountain system in W South America: the Andes and its component ranges.
2. a mountain system in W North America, including the Sierra Nevada, Coast Range, Cascade Range, and Rocky Mountains.
3. the entire chain of mountain ranges parallel to the Pacific coast, extending from Cape Horn to Alaska.