Tundra

n. vast and treeless arctic region (found for example in Siberia, northern Canada, and Lapland)

In physical geography, tundra is an area where the tree growth is hindered by low temperatures and short growing seasons. The term "tundra" comes from Kildin Sami tūndâr 'uplands, tundra, treeless mountain tract'. There are two types of tundra: Arctic tundra (which also occurs in Antarctica), and alpine tundra. In tundra, the vegetation is composed of dwarf shrubs, sedges and grasses, mosses, and lichens. Scattered trees grow in some tundra. The ecotone (or ecological boundary region) between the tundra and the forest is known as the tree line or timberline. [Image:Wrangel Island tundra.jpg|thumb|350px|Arctic tundra on Wrangel Island, Russia, a  World Heritage Site]]
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Noun
1. a vast treeless plain in the arctic regions between the ice cap and the tree line
(hypernym) plain, field, champaign

n. tundra, vast and treeless arctic region (found for example in Siberia, northern Canada, and Lapland)

n. tundra, vast and treeless arctic region