molecule
noun
mol·e·cule
ˈmä-li-ˌkyül 
1
: the smallest particle of a substance that retains all the properties (see property sense 1a) of the substance and is composed of one or more atoms (see atom sense 1a)
a molecule of water
a molecule of oxygen
2
: a tiny bit : particle
a molecule of political honesty—
Time
TimeSynonyms
Examples of molecule in a Sentence
There is not a molecule of evidence to support these charges.
not a molecule of sense in that girl
Recent Examples on the Web
Higher than normal levels of the hormone inhibit the production of molecules called cytokines, which are responsible for triggering the body’s healing process and dampening down inflammation.
—Georgia Day, Vogue, 25 Apr. 2024
For those who prefer to grind gravel and bound over boulders while surrounded by luxurious napa leather — and can’t imagine emitting even a single molecule of carbon dioxide while doing so — the fully electric Mercedes G-Wagen is for you.
—Andrew J. Hawkins, The Verge, 24 Apr. 2024
In return, the body adapts nutritious molecules into a host of cellular processes and adenosine triphosphate, or ATP, which cells turn into energy.
—Andrew Chapman, Longreads, 18 Apr. 2024
For example, a start-up could hypothesize that a molecule that sticks to a certain protein might cure a disease.
—Christina Jewett, New York Times, 15 Apr. 2024
The same molecule increases after intense exercise and helps regulate weight loss.
—Stephanie Brown, Verywell Health, 4 Apr. 2024
At this time, there was a major interest in understanding the molecules that orchestrate the development of organisms.
—William A. Haseltine, Forbes, 27 Mar. 2024
All inks are made up of one or more pigments, which are molecules that give tattoos their color, and some kind of carrier for that pigment.
—John Swierk, CBS News, 23 Mar. 2024
Ceramides are a type of lipid, or fatty molecules found naturally in the skin.
—Lisa Desantis, Health, 22 Mar. 2024
Georgia Day, Vogue, 25 Apr. 2024
For those who prefer to grind gravel and bound over boulders while surrounded by luxurious napa leather — and can’t imagine emitting even a single molecule of carbon dioxide while doing so — the fully electric Mercedes G-Wagen is for you.
—Andrew J. Hawkins, The Verge, 24 Apr. 2024
In return, the body adapts nutritious molecules into a host of cellular processes and adenosine triphosphate, or ATP, which cells turn into energy.
—Andrew Chapman, Longreads, 18 Apr. 2024
For example, a start-up could hypothesize that a molecule that sticks to a certain protein might cure a disease.
—Christina Jewett, New York Times, 15 Apr. 2024
The same molecule increases after intense exercise and helps regulate weight loss.
—Stephanie Brown, Verywell Health, 4 Apr. 2024
At this time, there was a major interest in understanding the molecules that orchestrate the development of organisms.
—William A. Haseltine, Forbes, 27 Mar. 2024
All inks are made up of one or more pigments, which are molecules that give tattoos their color, and some kind of carrier for that pigment.
—John Swierk, CBS News, 23 Mar. 2024
Ceramides are a type of lipid, or fatty molecules found naturally in the skin.
—Lisa Desantis, Health, 22 Mar. 2024
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'molecule.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Molecule.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molecule. Accessed 1 May. 2024.
Copy CitationKids Definition
molecule
noun
mol·e·cule
ˈmäl-i-ˌkyü(ə)l
1
: the smallest particle of a substance having all the characteristics of the substance
a molecule of water
a molecule of oxygen
2
: a very small bit : particle
Medical Definition
molecule
noun
mol·e·cule
ˈmäl-i-ˌkyü(ə)l
: the smallest particle of a substance that retains all the properties of the substance and is composed of one or more atoms
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