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An immense field or stream of ice, formed in the region of perpetual snow, and moving slowly down a mountain slope or valley, as in the Alps, or over an extended area, as in Greenland.

A broad ice sheet resting on a plain or plateau and spreading outward from a central névé, or region of accumulation.

crevasses, usually deep and often broad, frequently occurring near the head of a mountain glacier, about where the névé field joins the valley portion of the glacier.

A small mass of ice set free from the submerged part of a glacier or berg, and rising to the surface. Kane.

crevice or fissure, as in embankment; one of the clefts or fissure by which the mass of a glacier is divided.

- Giant kettle, a pothole of very large dimensions, as found in Norway in connection with glaciers. See Pothole. -- Giant powder. See Nitroglycerin. -- Giant puffball (Bot.), a fungus (Lycoperdon giganteum), edible when young, and when dried used for stanching wounds. -- Giant salamander (Zoöl.), a very large aquati…

Pertaining to ice or to its action; consisting of ice; frozen; icy; esp., pertaining to glaciers; as, glacial phenomena. Lyell.

One who attributes the phenomena of the drift, in geology, to glaciers.

A man who is skilled in traveling upon ice, as among glaciers.

An accumulation of earth and stones carried forward and deposited by a glacier. Lyell.

The upper part of a glacier, above the limit or perpetual snow. See Galcier.

a locality within the area of Pleistocene glaciation after the final disappearance of the glacier from the locality.

A scar; a mark. We find upon the limestone rocks the scarrings of the ancient glacier which brought the bowlder here. Tyndall.

A pinnacle of ice among the crevasses of a glacier; also, one of the blocks into which a glacier breaks on a steep grade.

tructural band or line; a striation; as, the striæ, or groovings, produced on a rock by a glacier passing over it; the striæ on the surface of a shell; a stria of nervous matter in the brain.

Pertaining or belonging to the under side of a glacier; being beneath a glacier; as, subglacial streams.

Substantial; firm. [R.] "[The glacier's] substant ice." The Century.

A deposit of clay, sand, and gravel, without lamination, formed in a glacier valley by means of the waters derived from the melting glaciers; -- sometimes applied to alluvium of an upper river terrace, when not laminated, and appearing as if formed in the same manner.

ual, or visible; to see in fancy. [Written also visualise.] No one who has not seen them [glaciers] can possibly visualize them. Lubbock.