molecule
noun
the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.
molecules
-
pluralof molecule.plural
The grammatical form denoting more than one person, place, thing, or idea.
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.
The meeting of water and plastic creates a third class of molecules called reactive oxygen species.
From Los Angeles Times ● Oct. 17, 2026
ROS are a type of free radical, a broad term for one class of unstable, high-energy molecules.
From Los Angeles Times ● Oct. 17, 2026
Carbon dioxide and water meet in the chloroplasts, where solar energy breaks down their molecules and reassembles them into the sugar glucose plus “a side order of oxygen,” the author writes.
From The Wall Street Journal ● Oct. 16, 2026
In the study, published in Science Advances, researchers examined precisely how HMA domains interact with the molecules released by the blast fungus.
From Science Daily ● Oct. 15, 2026
Remember how ionizing radiation breaks apart the bonds in molecules?
From "Meltdown" by Deirdre Langeland
