bar·chan

[bahr-kahn]
noun
a crescent-shaped sand dune with the convex side in the direction of the wind.

Origin:
1885–90; < Russian barkhán, said to be < Turkic

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
barchan, barkhan, barchane or barkan (bɑːˈkɑːn) [Click for IPA pronunciation guide]
 
n
a crescent-shaped shifting sand dune, convex on the windward side and steeper and concave on the leeward
 
barkhan, barkhan, barchane or barkan
 
n
 
barchane, barkhan, barchane or barkan
 
n
 
barkan, barkhan, barchane or barkan
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Barchan is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a scrap or morsel of food left at a meal.
Encyclopedia Britannica
Encyclopedia

barchan

crescent-shaped sand dune produced by the action of wind predominately from one direction. One of the commonest types of dunes, it occurs in sandy deserts all over the world

Learn more about barchan with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Parabolic dunes are the predominant type, although barchan and transverse dunes appear.
Large transverse and barchan dunes creep forward many feet per year, overwhelming all plant life in their paths.
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