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Meaning of “plate tectonics” in the English Dictionary

(Definition of plate tectonics from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"plate tectonics" in American English

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plate tectonicsnoun [U]

us   /ˈpleɪt tekˈtɑn·ɪks/
earth science the theory that the earth's surface is made of large layers of rock that are always moving, causing earthquakes and volcanoes, and explaining the creation of the varied features of the earth's surface
(Definition of plate tectonics from the Cambridge Academic Content Dictionary © Cambridge University Press)
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