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dune

American  
[doon, dyoon] / dun, dyun /

noun

  1. a sand hill or sand ridge formed by the wind, usually in desert regions or near lakes and oceans.


dune British  
/ djuːn /

noun

  1. a mound or ridge of drifted sand, occurring on the sea coast and in deserts

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

dune Scientific  
/ do̅o̅n /
  1. A hill or ridge of wind-blown sand. Dunes are capable of moving by the motion of their individual grains but usually keep the same shape.

  2. See more at barchan dune draa longitudinal dune seif dune transverse dune


Etymology

Origin of dune

1780–90; < French, Old French < Middle Dutch dūna; cognate with down 3

Explanation

A dune is a natural hill made of sand, either on a beach or in a desert. It's a good idea to bring plenty of water and a camel if you're trekking across sand dunes in the Sahara. Sometimes people drive special vehicles on the dunes beside the ocean — these are sometimes called "dune buggies." These seaside dunes are formed by a combination of wind and water, while the dunes in a desert are purely the result of wind. The origin of the word dune is somewhat uncertain, although it probably comes from a French word with an older Germanic root.

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Vocabulary lists containing dune

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Emojis, Disney characters, cigarettes and more pile up in humorous scenes that include a saber-toothed tiger driving a dune buggy and a pair of corvids fighting over a worm.

From The Wall Street Journal • Feb. 27, 2026

"There are now four known species of trapdoor spiders in California that live exclusively in coastal dune habitats," said corresponding author Emma Jochim, a doctoral student in the UC Davis Department of Entomology and Nematology.

From Science Daily • Nov. 2, 2025

You could not tell what was a sand dune and what was a snow mound.

From Salon • Jan. 29, 2025

It was being in a penguin holiday camp – there were lovers having an argument, kids swimming, others sunbathing and some were gathered at a wee dune, having what looked like a meeting.

From BBC • Sep. 21, 2024

We climb a dune, and a black sheet of sea spreads before us, its ripples silver-bright in the moonlight.

From "Without Refuge" by Jane Mitchell