Definify.com
Webster 1913 Edition
Glaciation
Glaˊci-a′tion
,Noun.
1.
Act of freezing.
2.
That which is formed by freezing; ice.
3.
The process of glaciating, or the state of being glaciated; the production of glacial phenomena.
Webster 1828 Edition
Glaciation
GLACIA'TION
,Noun.