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Perma Frost www.ask.com/Perma+Frost Get Perma Frost Find Perma Frost
noun
(in arctic or subarctic regions) perennially frozen subsoil.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To permafrost
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Permafrost
is always a great word to know.
So is quincunx. Does it mean:
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
Example Sentences
- Permafrost is frozen ground that can act as glue for the rocks perched at the top of a mountain.
- Around one-fifth of the world's land area lies within the permafrost zone.
- However, seasons are well defined and permafrost hides here on north-facing slopes and in sheltered hollows.
Collins
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History
permafrost
1943, coined in Eng. by S.W. Muller from perm(anent) frost.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
permafrost  (pûr'mə-frôst') Pronunciation Key
A layer of soil or bedrock that has been continuously frozen for at least two years and as long as tens of thousands of years. Permafrost can reach depths of up to 1,524 m (4,999 ft). It is found throughout most of the polar regions and underlies about one fifth of the Earth's land surface. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Word Dynamo Rating For Permafrost
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