noun
EXAMPLES FROM CORPUS
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Florence in permafrost Cold pinches the hills around Florence.
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Fulton lay on the permafrost , miming a cerebral haemorrhage.
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Lenses of rather pure ice are conceivable, but more likely is a permafrost containing 10 percent to 30 percent ice.
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Most of Mars seems to be covered with a layer of permafrost , kilometers deep in places.
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The first option is to extract water from subsurface permafrost and use that water directly in a nuclear or solar steam rocket.
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Undulating coastal plains and other ungraded lowlands, underlain by permafrost , in summer form some of the tundra's wettest areas.
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Very important to know, because suppose you got permafrost under your concrete slab?
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Water extraction from permafrost by distillation seems rather straight forward.