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English definition of “plate tectonics”

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plate tectonics

noun [U] uk   /ˌpleɪt.tekˈtɒn.ɪks/ us    /ˈtɑːn-/ specialized
the study of how the surface of the Earth is formed, how the separate pieces of it move, and the effects of this movement
(Definition of plate tectonics from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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