arête

Science Dictionary
arête   (ə-rāt')  Pronunciation Key 
A sharp, narrow ridge or spur commonly found above the snow line in mountainous areas that have been sculpted by glaciers. Arêtes form as the result of the continued backward erosion of adjoining cirques.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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