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English definition of “plate tectonics”

plate tectonics

noun [U]     /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 Geology - general words
(Definition of plate tectonics noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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