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dilute

American  
[dih-loot, dahy-, dahy-loot] / dɪˈlut, daɪ-, ˈdaɪ lut /

verb (used with object)

dilutes, present (3rd person singular) diluted, past participle, past diluting present participle
  1. to make (a liquid) thinner or weaker by the addition of water or the like.

  2. to make fainter, as a color.

  3. to reduce the strength, force, or efficiency of by admixture.

    Synonyms:
    diminish, mitigate, temper, weaken

verb (used without object)

dilutes, present (3rd person singular) diluted, past participle, past diluting present participle
  1. to become diluted.

adjective

  1. reduced in strength, as a chemical by admixture; weak.

    a dilute solution.

dilute British  
/ daɪˈluːt /

verb

  1. to make or become less concentrated, esp by adding water or a thinner

  2. to make or become weaker in force, effect, etc

    he diluted his story

"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

adjective

  1. chem

    1. (of a solution, suspension, mixture, etc) having a low concentration or a concentration that has been reduced by admixture

    2. (of a substance) present in solution, esp a weak solution in water

      dilute acetic acid

"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 dilute

1545–55; < Latin dīlūtus washed away, dissolved (past participle of dīluere ), equivalent to dī- di- 2 + -lūtus, combining form of lautus ( lav ( ere ) to wash + -tus past participle suffix)

Explanation

When you dilute something, you make it thinner, weaker, or more watered down. If you put lots of ice cubes in your soda, the ice will melt and dilute the drink. Think about diluting as lessening the quality but increasing the quantity. Unless you're diluting a really strong drink to make it taste better or diluting heavy paint to get a lighter shade — then the quality actually improves. Quipped President John F. Kennedy, “Public speaking is the art of diluting a two-minute idea with a two-hour vocabulary.”

Keep Reading on Vocabulary.com

Vocabulary lists containing dilute

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:

Honeybees gather pollen from many different flower species, which may dilute contaminants across their food supply.

From Science Daily Jul. 7, 2026

But for a fair number of others, the main objection is that Summerween cheapens Halloween — that to celebrate a summer facsimile will dilute the real thing.

From Salon Jun. 30, 2026

This discount effectively freezes Strategy’s ability to issue new common shares to buy more bitcoin because doing so would dilute existing shareholders.

From The Wall Street Journal Jun. 29, 2026

“When I tried to dilute it into the purest essence,” she says, “it felt like safety.”

From Los Angeles Times Jun. 29, 2026

“We have to dilute the poison until the nymphs are cleansed.”

From "The Mark of Athena" by Rick Riordan

Only firms in desperate need of cash sell more shares when their valuations are low, because it dilutes existing shareholders and trashes the share price.

From The Wall Street Journal Jun. 21, 2026

Investors aren’t usually happy when a company sells stock to raise money, because it dilutes the holdings of current shareholders by reducing the percentage of the company that those shareholders own.

From MarketWatch May 11, 2026

But even that movie dilutes Mary Shelley’s 1818 novel to a fraction of its story, reducing all of the text’s thematic resonance to a footnote along with it.

From Salon Mar. 8, 2026

This panoramic sweep lends “The Secret Agent” a novelistic sprawl, although it sometimes dilutes the proceedings.

From Los Angeles Times Dec. 5, 2025

It dilutes the blood, thus creating an abnormal condition in the circulatory system, and may raise the pressure of blood and dilate the heart.

From No Animal Food and Nutrition and Diet with Vegetable Recipes by Wheldon, Rupert H.

That announcement sent shares of Solidion, which has a market value of about $140 million based on fully diluted shares outstanding, up 14.3% in premarket trading at $14.10 a share.

From Barron's Jun. 29, 2026

Researchers plan to use it to study the electronic properties of atomically thin materials, nanostructures, and highly diluted atomic and molecular samples.

From Science Daily Jun. 24, 2026

The analysts increase their forecasts for adjusted diluted earnings per share and margins over the next three years.

From The Wall Street Journal Jun. 23, 2026

By the time Emmet Sheehan took the mound, the smell had diluted, and the sunshine broke through the haze.

From Los Angeles Times Jun. 21, 2026

If those desirable mutants proceeded to interbreed with normal plants, the mutation would immediately be diluted or lost.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

Grossi also said on Friday that an alternative to diluting could be shipping the enriched uranium out of Iran.

From Barron's Jun. 26, 2026

At the same time, the rapid rise of third-party delivery apps has flooded the market with alternative options, diluting Pizza Hut's historic dominance.

From BBC Jun. 16, 2026

But analysts say T-Mobile is constrained on large deals: Its high leverage makes borrowing expensive, and it can’t issue stock without diluting its German parent’s stake.

From The Wall Street Journal Jun. 10, 2026

“Disjointed colors, patterns, and logo-heavy designs are diluting brand equity,” he said.

From MarketWatch Jun. 5, 2026

We could cure Daoud right now, or we could try to save more people—like my parents—by conserving every drop and diluting it....But in doing so, we might end up with nothing.

From "City of the Plague God" by Sarwat Chadda

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