D defs.my
Entry 3 senses Webster, 1913

Glaciation

/glāshˌ-ē-āsh'-ən/ · Gla·ci·a·tion · IPA /ˌɡleɪsiˈeɪʃən/
01 n. Act of freezing.
  1. 1.
    Act of freezing.
  2. 2.
    That which is formed by freezing; ice.
  3. 3.
    The process of glaciating, or the state of being glaciated; the production of glacial phenomena.