1
a
: of, relating to, or concerned with atoms
atomic physics
b
: nuclear sense 2
atomic energy
2
a
: marked by acceptance of the theory of atomism
3
: minute
4
of a chemical element
: existing in the state of separate atoms
Examples of atomic in a Sentence
made atomic adjustments to the clock's mechanism to keep it from whirring as it ran
Recent Examples on the Web
In this process, subatomic particles such as protons and neutrons—and even entire atomic nuclei—could be smashed together, fusing to form heavier nuclei and releasing an enormous amount of energy.
—
Phil Plait, Scientific American, 10 Apr. 2025
This is about the mechanics of how money moves—legacy systems controlled by intermediaries, burdened by high costs and delays, or blockchain rails enabling direct, peer-to-peer, atomic settlement.
—Roomy Khan, Forbes.com, 10 Apr. 2025
Here's a timeline of the tensions between the two countries over Iran's atomic program.
—Associated Press, Time, 9 Apr. 2025
Previously, research has suggested the formation of the heaviest elements, such as gold, requires copious amounts of neutrons that atomic nuclei can absorb to become larger and larger.
—Charles Q. Choi, Space.com, 7 Apr. 2025
See All Example Sentences for atomic
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Phil Plait, Scientific American, 10 Apr. 2025
This is about the mechanics of how money moves—legacy systems controlled by intermediaries, burdened by high costs and delays, or blockchain rails enabling direct, peer-to-peer, atomic settlement.
—Roomy Khan, Forbes.com, 10 Apr. 2025
Here's a timeline of the tensions between the two countries over Iran's atomic program.
—Associated Press, Time, 9 Apr. 2025
Previously, research has suggested the formation of the heaviest elements, such as gold, requires copious amounts of neutrons that atomic nuclei can absorb to become larger and larger.
—Charles Q. Choi, Space.com, 7 Apr. 2025
See All Example Sentences for atomic
Cite this Entry
“Atomic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/atomic. Accessed 23 Apr. 2025.
Copy CitationKids Definition
atomic
adjective
atom·ic
ə-ˈtäm-ik 
1
: of, relating to, or concerned with atoms, atomic bombs, or nuclear energy
atomic physics
the atomic age
atomic energy
2
: extremely small
3
: found in the state of separate atoms
atomic hydrogen
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