Definition of glaciation noun from the Oxford Advanced American Dictionary

 

glaciation

 noun
noun
NAmE//ˌɡleɪʃiˈeɪʃn//
 
, NAmE//ˌɡleɪsiˈeɪʃn//
 
[uncountable](geology)
 
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the process or result of land being covered by glaciers
See the Oxford Advanced Learner's Dictionary entry: glaciation