glaciation

Từ điển WordNet v3.1 - WordNet Dictionary

noun

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
• Derivationally related forms:
glacial, glaciate
• Hypernyms:
environmental condition
2. the process of covering the earth with glaciers or masses of ice
• Derivationally related forms:
glacial, glaciate
• Hypernyms:
geological process, geologic process
• Hyponyms:
Riss glaciation, Saale glaciation, Wolstonian glaciation