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plate tectonics

noun [U]
 
 
/ˌpleɪt.tekˈtɒn.ɪks/ US  /ˈtɑːn-/ specialized

Definition

the study of how the surface of the Earth is formed, how the separate pieces of it move, and the effects of this movementGeology - general words
(Definition of plate tectonics noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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