To cover or erode with ice or glaciers; to subject land or rock to glacial action. Advancing ice sheets glaciated the northern plains, carving out lakes and valleys.
(intransitive) To become covered by glaciers or by ice; to undergo glaciation. High-altitude peaks began to glaciate as the climate cooled.
To freeze or make icy; to form a surface layer of ice on something. Spray from the waterfall can glaciate the surrounding rocks in winter.