glaciation

noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about glaciation at Wordnik → Where our words come from →

1. The condition of being covered with glaciers or masses of ice; the result of glacial action.

   Agassiz recognized marks of glaciation all over northern Europe

2. The process of covering the earth with glaciers or masses of ice.