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conserve

American  
[kuhn-surv, kon-surv, kuhn-surv] / kənˈsɜrv, ˈkɒn sɜrv, kənˈsɜrv /

verb (used with object)

conserves, present (3rd person singular) conserved, past participle, past conserving present participle
  1. to prevent injury, decay, waste, or loss of.

    Conserve your strength for the race.

  2. to use or manage (natural resources) wisely; preserve; save.

    Conserve the woodlands.

    Synonyms:
    safeguard, husband
  3. Physics, Chemistry. to hold (a property) constant during an interaction or process.

    the interaction conserved linear momentum.

  4. to preserve (fruit) by cooking with sugar or syrup.


noun

conserves plural
  1. Often conserves. a mixture of several fruits cooked to jamlike consistency with sugar and often garnished with nuts and raisins.

conserve British  

verb

  1. to keep or protect from harm, decay, loss, etc

  2. to preserve (a foodstuff, esp fruit) with sugar

"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

noun

  1. a preparation of fruit in sugar, similar to jam but usually containing whole pieces of fruit

"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

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Etymology

Origin of conserve

First recorded in 1325–75; (for the verb) Middle English, from Latin conservāre “to save, preserve”; equivalent to con- + serve; (for the noun) Middle English, from Middle French conserve, noun derivative of conserver, from Latin, as above

Explanation

To conserve is to save or protect something, like money, or your energy on a long run. People are also encouraged to conserve energy by turning off lights and not cranking the air conditioner. Conserve is from the Latin for "to keep, preserve, guard" (conservare). Con means "together," so "together" we can "serve" the planet by not doing doughnuts in the wetlands on our jet skis. You can conserve the planet or a little something for yourself — you might conserve hot water so you can wash your hair later, or try to conserve your old bedroom when you go off to college (and your mom is ready for a home office).

Keep Reading on Vocabulary.com

Vocabulary lists containing conserve

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 latest results highlight a pronounced turnaround for Intel, which just two years ago had to suspend its dividend and conduct massive layoffs as it looked to conserve cash.

From MarketWatch Jul. 24, 2026

These should help AI tools like its Gemini chatbot generate quicker responses and conserve computing resources.

From The Wall Street Journal Jul. 23, 2026

Both Messi and Ronaldo have benefited from how they play as well, walking rather running for long stretches of the game to conserve energy for the burst they need to lose a defender.

From Los Angeles Times Jul. 15, 2026

Since World War One, the US has set its clocks forward during the summer to have more daylight in the afternoon and to conserve electricity.

From BBC Jul. 14, 2026

He had noticed they’d gone to one torch when they met up with Ripred, apparently to conserve fuel.

From "Gregor the Overlander" by Suzanne Collins

However, in line with international norms, citrus-based conserves will need to be distinguished as a separate type of product, and will have to be sold using the new legal name "citrus marmalade".

From BBC Apr. 2, 2026

The use of plastic in agriculture undeniably conserves important resources.

From Science Daily Sep. 25, 2023

Conversely, some people end up sleeping for long stretches when they have COVID, Al-Aly said, as the body conserves energy while it fights off the infection.

From Seattle Times Sep. 25, 2023

In contrast, reducing waste generation conserves natural resources and avoids other negative environmental impacts throughout a product's life.

From Salon Jul. 25, 2023

We often dip into it, and the tough ham sausages, the tins of liver sausages, the conserves, the boxes of cigarettes rejoice our hearts.

From "All Quiet on the Western Front: A Novel" by Erich Maria Remarque

If properly conserved, they can last for hundreds of years.

From BBC Jul. 20, 2026

The discovery shows that even one of biology's most conserved systems can be more flexible than expected.

From Science Daily May 7, 2026

It raised the height of a dam to double its storage, built the desalination plant and acquired rights to a trove of conserved Colorado River water from a desert farming district.

From The Wall Street Journal Apr. 16, 2026

Abroad, though, interest rates and inflation risks have shot up, fuel is being conserved, and economic forecasts are darkening.

From The Wall Street Journal Apr. 4, 2026

Gaetsewe, however, conserved his tobacco, and never ran out.

From "Long Walk to Freedom" by Nelson Mandela

Jackie and Shadow became internet sensations thanks to the live webcams maintained in their nest by nonprofit organization Friends of Big Bear Valley, which is an outspoken voice for conserving eagle habitat.

From Los Angeles Times Jun. 24, 2026

A row is growing over the potential cull of Dartmoor's hill ponies as campaigners warn Natural England's approach to conserving the landscape could "devastate" the endangered breed.

From BBC Jun. 16, 2026

By using Mars' gravitational pull, mission planners were able to give the spacecraft a major boost while conserving valuable propellant for later stages of the mission.

From Science Daily May 23, 2026

For example, in the early 1990s, he and his colleagues examined standard recommendations for conserving reed beds—important habitats for birds that become overgrown with trees over time.

From Slate Apr. 28, 2026

“Pete, Otis, unload the hay burners and get them watered, will you? Use the stream instead of troughs. We’re conserving water.”

From "Water for Elephants" by Sara Gruen

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