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English definition of “glaciation”

glaciation

noun [U]     /ˌɡleɪ.siˈeɪ.ʃən/
the forming, existence, or movement of glaciers over the surface of the Earth: This landscape shows many clear features of glaciation.Snow and iceCold
(Definition of glaciation noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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