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
Synonyms of atomic
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
Ordering the atomic lattice One reason for the mixed results has been materials quality.
—
Neetika Walter, Interesting Engineering, 26 Dec. 2025
Computations on atomic systems are about one-hundredth to one-thousandth as fast as their superconducting counterparts, says Jerry Chow, director of quantum systems at IBM Quantum.
—IEEE Spectrum, 23 Dec. 2025
India opens nuclear energy to private sector India is opening up its nuclear energy industry to the private sector, echoing a global shift toward atomic power.
—Alexander Onukwue, semafor.com, 19 Dec. 2025
This year, the 80th anniversary of the blasts over Hiroshima and Nagasaki, brought new attention to the plight of atomic survivors, including the soldiers and other military who served in the region.
—Todd Harmonson, Oc Register, 18 Dec. 2025
See All Example Sentences for atomic
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Neetika Walter, Interesting Engineering, 26 Dec. 2025
Computations on atomic systems are about one-hundredth to one-thousandth as fast as their superconducting counterparts, says Jerry Chow, director of quantum systems at IBM Quantum.
—IEEE Spectrum, 23 Dec. 2025
India opens nuclear energy to private sector India is opening up its nuclear energy industry to the private sector, echoing a global shift toward atomic power.
—Alexander Onukwue, semafor.com, 19 Dec. 2025
This year, the 80th anniversary of the blasts over Hiroshima and Nagasaki, brought new attention to the plight of atomic survivors, including the soldiers and other military who served in the region.
—Todd Harmonson, Oc Register, 18 Dec. 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 31 Dec. 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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