permafrost(redirected from Sporadic permafrost)
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Related to Sporadic permafrost: Permafrost soil, Discontinuous permafrost zone, Continuous permafrost
permafrostpermanently frozen ground on which only a thin layer thaws in the summer, as in the high Arctic and Antarctic.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005