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n. A treeless area between the icecap and the tree line of Arctic regions, having a permanently frozen subsoil and supporting low-growing vegetation such as lichens, mosses, and stunted shrubs.

n. A flat and treeless arctic biome.

n. One of the level or undulating treeless plains characteristic of northern arctic regions in both hemispheres; the term is most commony associated with the arctic plains of Siberia. The tundras mark the limit of arborescent vegetation; they consist of black mucky soil with a permanently frozen subsoil, but support a dense growth of mosses and lichens, and dwarf herbs and shrubs, often showy-flowered.

n. A marshy moss-covered plain or rolling district, deeply frozen in winter and thawed at the surface in the summer. Such plains occupy large areas of arctic Asia and North America.

n. In the northern part of Russia (both in Europe and in Asia), one of the nearly level treeless areas which occupy most of that region, and do not differ essentially from the steppes, except that, lying further north, their climate and vegetation are more decidedly arctic than those of the country to the south, with a corresponding increase in the number of small lakes and morasses.

n. a vast treeless plain in the Arctic regions where the subsoil is permanently frozen

"The tundra is so soft, you go right up to your naval."

field    champaign    plain   

steppe    grassland    wasteland    prairie    moor    veldt    Savannah    mountainside    farmland    marsh