English

Definition of lithosphere noun from the Oxford Advanced Learner's Dictionary

 

lithosphere

 noun
noun
BrE BrE//ˈlɪθəsfɪə(r)//
 
; NAmE NAmE//ˈlɪθəsfɪr//
 
[singular] (geology)
 
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the layer of rock that forms the outer part of the earth
See the Oxford Advanced American Dictionary entry: lithosphere