Definition of the Sierra Nevada from the Oxford Advanced Learner's Dictionary

 

the Sierra Nevada

 
BrE
 
; NAmE
 
(also the Sierras
BrE
 
; NAmE
 
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a mountain range in the US state of California. It is 420 miles/673 kilometres long, and the highest point is Mount Whitney. It includes Yosemite National Park and two other national parks, Sequoia and Kings Canyon.