GLACIATION Meaning of GLACIATION in English gla ‧ ci ‧ a ‧ tion /ˌɡleɪsiˈeɪʃ ə n/ BrE AmE noun [uncountable] technical the process in which land is covered by glaciers, or the effect this process has Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012