Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A landscape pattern formed by the melting of permafrost and characterized by patterns of hummocks and water-filled depressions.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun geology A region similar in appearance to karst topography, characterized by an irregular land surface, with bogs, pits, and other depressions, formed in areas of permafrost due to ice melting.

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