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| seif dune [ sáyf dn, sf dn ] (plural seif dunes) |
noun |
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| Definition: |
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desert dune: a sand dune with curved edges, found in hot deserts in a series of parallel ridges and often reaching several miles in length and up to 100 m (300 ft) in height
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| [Early 20th century. < Arabic sayf "sword"] |
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