Definition of glaciation in English:


Line breaks: gla¦ci|ation
Pronunciation: /ˌgleɪsɪˈeɪʃ(ə)n


[mass noun] Geology
  • 1The process or state of being covered by glaciers or ice sheets.
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    • These hydrogeological conditions are controlled by relative land and sea level, erosion and deposition, the cold climate processes of permafrost and glaciation, and rock stress changes.
    • In Illinois, levels of diversity drop precipitously, most likely reflecting one or more genetic bottlenecks in areas that were once covered by the Wisconsin glaciation.
    • Geologically young, the Rockies exhibit faulting, glaciation, and volcanism, resulting in rugged, spectacularly scenic terrain.
  • 1.1 [count noun] A glacial period.
    More example sentences
    • Their study by others led to the discovery of multiple glaciations, separated by interglacial periods.
    • No polar glaciations are known during the Late Permian.
    • Minor glaciations may also have taken place in the earlier Ordovician early Silurian and late Devonian.

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Pronunciation: grəʊˈtɛskəri
grotesque quality or grotesque things collectively