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What is the world's largest desert?

desert

1 American  
[dez-ert] / ˈdɛz ərt /

noun

  1. An image of the word desert as defined by a region so arid because of little rainfall that it supports only sparse and widely spaced vegetation or no vegetation at all.

    a region so arid because of little rainfall that it supports only sparse and widely spaced vegetation or no vegetation at all.

    The Sahara is a vast sandy desert.

    Synonyms:
    wasteland, waste
  2. any area in which few forms of life can exist because of lack of water, permanent frost, or absence of soil.

    Synonyms:
    wasteland
  3. an area of the ocean in which it is believed no marine life exists.

  4. (formerly) any unsettled area between the Mississippi and the Rocky Mountains thought to be unsuitable for human habitation.

  5. any place lacking in something.

    The town was a cultural desert.

    Synonyms:
    wasteland

adjective

  1. of, relating to, or like a desert.

    a desert landscape.

    Synonyms:
    arid, infertile, barren, desolate
  2. occurring, living, or flourishing in the desert.

    a desert tribe; a desert palm.

  3. designed or suitable for wear in the desert, as cool, protective clothing.

    a big, wide-brimmed desert hat.

desert 2 American  
[dih-zurt] / dɪˈzɜrt /

verb (used with object)

  • deserts,
    present (3rd person singular)
  • deserted,
    past participle,  past
  • deserting
    present participle
  1. to leave (a person, place, etc.) without intending to return, especially in violation of a duty, promise, or the like.

    He deserted his wife.

    Synonyms:
    forsake, quit, leave, abandon
  2. (of military personnel) to leave or run away from (service, duty, etc.) with the intention of never returning.

    Terrified of the approaching battle, he deserted his post just before dawn.

  3. to fail (someone) at a time of need.

    None of his friends had deserted him.


verb (used without object)

  • deserts,
    present (3rd person singular)
  • deserted,
    past participle,  past
  • deserting
    present participle
  1. to forsake or leave one's duty, obligations, etc. (sometimes followed by from, to, etc.).

    Many deserted during the food shortage.

    Synonyms:
    resign, abdicate
  2. (of military personnel) to leave service, duty, etc., with no intention of returning.

    Troops were deserting to the enemy.

    Synonyms:
    go AWOL
desert 3 American  
[dih-zurt] / dɪˈzɜrt /

noun

  1. Usually deserts reward or punishment that is deserved.

    Death was his desert.

    Synonyms:
    justice, reward, recompense, payment, due, penalty, retribution, retaliation
  2. the state or fact of deserving reward or punishment.

  3. the state or condition of being worthy, as in character or behavior.

    Synonyms:
    worth, virtue, merit

idioms

  1. get / receive / etc. one's (just) deserts, to be punished or rewarded in a manner appropriate to one's actions or behavior.

    Some people felt he had gotten his just deserts, having been imprisoned and relieved of his ill-gotten gains, but others would have preferred old-style public flogging, followed by drawing and quartering, and who can blame them?

desert 1 British  
/ dɪˈzɜːt /

noun

  1. (often plural) something that is deserved or merited; just reward or punishment

  2. the state of deserving a reward or punishment

  3. virtue or merit

"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

desert 2 British  
/ ˈdɛzət /

noun

  1. a region that is devoid or almost devoid of vegetation, esp because of low rainfall

  2. an uncultivated uninhabited region

  3. a place which lacks some desirable feature or quality

    a cultural desert

  4. (modifier) of, relating to, or like a desert; infertile or desolate

"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

desert 3 British  
/ dɪˈzɜːt /

verb

  1. (tr) to leave or abandon (a person, place, etc) without intending to return, esp in violation of a duty, promise, or obligation

  2. military to abscond from (a post or duty) with no intention of returning

  3. (tr) to fail (someone) in time of need

    his good humour temporarily deserted him

  4. (tr) Scots law to give up or postpone (a case or charge)

"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

desert Scientific  
/ dĕzərt /
  1. A large, dry, barren region, usually having sandy or rocky soil and little or no vegetation. Water lost to evaporation and transpiration in a desert exceeds the amount of precipitation; most deserts average less than 25 cm (9.75 inches) of precipitation each year, concentrated in short local bursts. Deserts cover about one fifth of the Earth's surface, with the principal warm deserts located mainly along the Tropic of Cancer and the Tropic of Capricorn, where warm, rising equatorial air masses that have already lost most of their moisture descend over the subtropical regions. Cool deserts are located at higher elevations in the temperate regions, often on the lee side of a barrier mountain range where the prevailing winds drop their moisture before crossing the range.


desert More Idioms  

    More idioms and phrases containing desert


Synonym Usage

Desert, waste, wilderness refer to areas that are largely uninhabited. Desert emphasizes lack of water (though not specifically high temperature); it refers to a dry, barren, treeless region, usually sandy: a high-altitude frozen desert. Waste emphasizes lack of inhabitants and of cultivation; it is used of wild, barren land: a desolate waste. Wilderness emphasizes the difficulty of finding one's way, whether because of barrenness or of dense vegetation: a trackless wilderness.

Desert, abandon, forsake mean to leave behind persons, places, or things. Desert implies intentionally violating an oath, formal obligation, or duty: to desert campaign pledges. Abandon suggests giving up wholly and finally, whether of necessity, unwillingly, or through shirking responsibilities: to abandon a hopeless task; abandon a child. Forsake has emotional connotations, since it implies violating obligations of affection or association: to forsake a noble cause.

Desert, merit, worth refer to the quality in a person, action, or thing that entitles recognition, especially favorable recognition. Desert is the quality that entitles one to a just reward: according to her deserts. Merit is usually the excellence that entitles to praise: a person of great merit. Worth is always used in a favorable sense and signifies inherent value or goodness: The worth of your contribution is incalculable.

Closer Look

A desert is defined not by temperature but by the sparse amount of water found in a region. An area with an annual rainfall of fewer than 25 centimeters (9.75 inches) generally qualifies as a desert. In spite of the dryness, however, some animals and plants have adapted to desert life and thrive in these harsh environments. While different animals live in different types of deserts, the dominant animals of warm deserts are reptiles, including snakes and lizards, small mammals, such as ground squirrels and mice, and arthropods, such as scorpions and beetles. These animals are usually nocturnal, spending the day resting in the shade of plants or burrowed in the ground, and emerging in the evenings to hunt or eat. Warm-desert plants are mainly ground-hugging shrubs, small wooded trees, and cacti. Plant and animal life is scarcer in the cool desert, where the precipitation falls mainly as snow. Plants are generally scattered mosses and grasses that are able to survive the cold by remaining low to the ground, avoiding the wind, and animal life can include both large and small mammals, such as deer and jackrabbits, as well as a variety of raptors and other birds.

Other Word Forms

Derived Forms

Inflected Forms

Participles

Conjugated Forms

Present

Past

Future

Etymology

Origin of desert1

First recorded in 1250–1300; Middle English adjective desert, deserd, diserte “barren, unproductive, dried up (lake), deserted (city),” from Anglo-French, Old French des(s)ert “uncultivated; without inhabitants,” from Late Latin dēsertum (neuter), noun use of past participle of Latin dēserere “to abandon, forsake,” equivalent to dē- prefix meaning “from, away from, out of ” + serere “to join together (in a line)”; see origin at de-, series

Origin of desert2

First recorded in 1470–80; from Middle French déserter, from Medieval Latin dēsertāre “to desert; lay waste,” frequentative of Latin dēserere “to part company, leave, forsake,” literally “to undo the links,” equivalent to dē- prefix meaning “from, away from” + serere “to link together, entwine, interlace”; see also desert 1

Origin of desert3

First recorded in 1275–1325; Middle English noun desert, deseert, decert(e), from Old French deserte, noun use of feminine past participle of deservir “to serve devotedly”; see origin at deserve

Explanation

A desert is a very dry area of land where few plants and animals can live. If you find yourself stranded in the middle of the desert, you'll have no company except for the occasional lizard or scorpion. Desert comes from the Latin desertus, for abandoned or lying in waste. This can refer to a vast sandy area without vegetation, or any empty, lifeless expanse. As a verb, it means to leave someone or something. A soldier who runs away from the army is called a deserter. Occasionally you'll hear someone say, "He got his just deserts," which doesn't have anything to do with abandonment; it means he got what he deserved.

Keep Reading on Vocabulary.com

Vocabulary lists containing desert

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.

See Examples For:

The cafe is a cacophony of color in an expanse of desert brown.

From Los Angeles Times Sep. 22, 2026

The search for the source of the medbed conspiracy took me into the world of scammers and crystals and alien invasions and broken families and sci-fi movie sets and the Arizona desert.

From Slate Sep. 22, 2026

But one doesn’t have to be near the desert to hear the dissonance.

From Salon Sep. 21, 2026

Ron Bath was flying his RF-4 Phantom military jet at nearly 700 miles an hour over the Nevada desert when it smashed into a bird, destroying one of the engines and part of the wing.

From The Wall Street Journal Sep. 15, 2026

He rubbed his eyes, thinking he was dreaming, and when he looked down, he was over a big old desert somewhere and whoosh—he was gazing down at blue waters again.

From "The Seven Wonders of Sassafras Springs" by Betty G. Birney

Coastal Southern California enjoys its relatively mild summer climate thanks to several factors, including a cool ocean’s air-conditioning effect, protective mountains, proximity to deserts, and a weather pattern that usually avoids drawing in tropical moisture.

From Los Angeles Times Sep. 9, 2026

The findings come as ministers have pledged to tackle so-called "dental deserts", but dentists say the current deal is not viable.

From BBC Aug. 23, 2026

Today, many of the best places to conduct this work are deserts or Arctic landscapes.

From Science Daily Aug. 17, 2026

The weather service is predicting elevated to briefly critical fire weather conditions in the interior valleys, mountains and deserts through Saturday due to hot, dry and breezy conditions, including long periods of single-digit humidity levels.

From Los Angeles Times Aug. 3, 2026

And while views of the surrounding mountains and deserts were spectacular, the army built high fences around the entire lab—making the scientists feel like prisoners.

From "Bomb" by Steve Sheinkin

O'Neill's famed ability to problem-solve and inspire has deserted him, for now.

From BBC Sep. 20, 2026

But this isn’t just a deserted patch of sand.

From MarketWatch Sep. 1, 2026

He has strained his eyes writing stories in the dark in a deserted gym.

From Los Angeles Times Aug. 23, 2026

At night, the narrow cobbled streets of Old Havana are enveloped in inky black, devoid of power and virtually deserted.

From Barron's Aug. 18, 2026

It was like walking through a playhouse; we passed a deserted living room with a settee beside a fireplace, then a fake patio, then an artist’s loft.

From "The Red Car to Hollywood" by Jennie Liu

But a major reason for voters deserting the party in past elections was inflation, an unwelcome phenomenon for households after several decades of stable or falling prices.

From Barron's Feb. 9, 2026

But the rate is half the national level for Californians under 35, and they are precisely the group that is deserting the West Coast for “cost of living” reasons.

From Los Angeles Times Feb. 18, 2025

In a mountainous village of post-war Italy, a taciturn Sicilian soldier hides out after deserting the army.

From BBC Dec. 9, 2024

But the Syrian army collapsed with surprising ease, with many troops deserting the battlefield, in the face of the HTS rebels’ onslaught.

From Slate Dec. 5, 2024

“You know what it was like,” El Patron whispered, his strength deserting him now after his outburst.

From "The House of the Scorpion" by Nancy Farmer

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