Cordillera is group of parallel mountain ranges that are usually the principal mountain system of a continent. They also contain the intervening plateaus and other features. This type of mountain system is common in the Andes and in the Rockies.
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what is the definition of cordillera
[kawr-dl-yair-uh, -air-uh, kawr-dil-er-uh]
a chain of mountains, usually the principal mountain system or mountain axis of a large landmass.