liquid

American  

[lik-wid] / ˈlɪk wɪd /

adjective

1. 

   composed of molecules that move freely among themselves but do not tend to separate like those of gases; neither gaseous nor solid.

2. of, relating to, or consisting of liquids.

   a liquid diet.

3. flowing like water.

4. clear, transparent, or bright.

   liquid eyes.

5. (of sounds, tones, etc.) smooth; agreeable; flowing freely.

   the liquid voice of a trained orator.

6. in cash or readily convertible into cash without significant loss of principal.

   liquid assets.

7. Phonetics. characterizing a frictionless speech sound pronounced with only a partial obstruction of the breath stream and whose utterance can be prolonged as that of a vowel, especially l and r.

8. (of movements, gestures, etc.) graceful; smooth; free and unconstricted.

   the ballerina's liquid arabesques.

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noun

• liquids
  plural

1. a liquid substance.

2. Phonetics. either r or l, and sometimes m, n, ng.

liquid British  

/ ˈlɪkwɪd /

noun

1. a substance in a physical state in which it does not resist change of shape but does resist change of size Compare gas solid

2. a substance that is a liquid at room temperature and atmospheric pressure

3. phonetics a frictionless continuant, esp ( l ) or ( r )

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adjective

1. of, concerned with, or being a liquid or having the characteristic state of liquids

   liquid wax

2. shining, transparent, or brilliant

3. flowing, fluent, or smooth

4. (of assets) in the form of money or easily convertible into money

liquid Scientific  

/ lĭk′wĭd /

1. One of four main states of matter, composed of molecules that can move about in a substance but are bound loosely together by intramolecular forces. Unlike a solid, a liquid has no fixed shape, but instead has a characteristic readiness to flow and therefore takes on the shape of any container. Because pressure transmitted at one point is passed on to other points, a liquid usually has a volume that remains constant or changes only slightly under pressure, unlike a gas.

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liquid Cultural  

1. A phase of matter in which atoms or molecules can move freely while remaining in contact with one another. A liquid takes the shape of its container. (Compare gas and solid.)

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Synonym Usage

Liquid, fluid agree in referring to matter that is not solid. Liquid commonly refers to substances, as water, oil, alcohol, and the like, that are neither solids nor gases: Water ceases to be a liquid when it is frozen or turned to steam. Fluid is applied to anything that flows, whether liquid or gaseous: Pipes can carry fluids from place to place.

Other Word Forms

Derived Forms

• liquidness
  noun
• nonliquid
  adjective
• unliquid
  adjective
• liquidly
  adverb
• nonliquidly
  adverb

Inflected Forms

Nouns

• liquids
  plural

Etymology

Origin of liquid

First recorded in 1350–1400; Middle English liquyd, from Latin liquidus, equivalent to liqu(ēre) “to be liquid” + -idus -id ⁴

Explanation

In everyday use, liquid is the opposite of solid––water at room temperature is a liquid: Heat it to boiling, it turns to a gas. Chill it below freezing, it turns to ice. Liquid describes a state in which a compound such as water flows. Juice is a liquid. Milk is a liquid. Your swimming pool is full of liquid. When assets are liquid, that means they can be liquidated easily, i.e., sold for cash. Stocks and bonds are liquid assets. Real estate, which can take a long time to sell, is considered illiquid.

Example Sentences

See Examples For:

liquid liquids

Bond yields were higher, and a deep and liquid market made it attractive for hedge funds making debt-fueled trades.

From The Wall Street Journal ● Oct. 3, 2026

In a study published in npj Quantum Information, researchers from Surrey's Quantum Sciences Group describe a different approach built around superfluid helium-3 - an unusual form of liquid helium that can flow without friction.

From Science Daily ● Oct. 1, 2026

“Most of these people don’t have liquid money sitting around,” she said.

From Los Angeles Times ● Oct. 1, 2026

"There's a lot of energy produced in both putting the gas into liquid and then taking it out into gas," he said.

From BBC ● Sep. 21, 2026

When the rock falls in, it takes up space that used to be occupied by water, so the liquid has to move out of the way.

From "Meltdown" by Deirdre Langeland

Surrounding it are eight microscopic channels that can transport liquids.

From Science Daily ● Sep. 21, 2026

The number of messages OpenAI agents sent to resolve the Navier-Stokes problem, a series of mathematical equations that describe how liquids and gases move.

From The Wall Street Journal ● Sep. 8, 2026

Physicists have predicted that fractons could occur in several types of systems, including quantum spin liquids.

From Science Daily ● Sep. 7, 2026

“Nonetheless, Strait of Hormuz transits remain subdued, well below pre-conflict levels, about 8 million barrels a day for total petroleum liquids, versus a pre-war level of about 21 million barrels a day,” he said.

From MarketWatch ● Aug. 31, 2026

So we mixed up a batch of what Brian called nuclear fuel, pouring different liquids into a can.

From "The Glass Castle" by Jeannette Walls