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
Israel launched an overnight attack aimed at taking out Iran’s nuclear program, citing fears that its chief adversary was getting closer to building an atomic weapon.
—
Rob Nikolewski, San Diego Union-Tribune, 13 June 2025
Tehran Research Reactor The Tehran Research Reactor is at the headquarters of the Atomic Energy Organization of Iran, the civilian body overseeing the country’s atomic program.
—Jon Gambrell, Los Angeles Times, 13 June 2025
In a video announcing the military operation, Israeli Prime Minister Benjamin Netanyahu said the strikes hit Iran's main enrichment site, the Natanz atomic facility, and targeted Iran's leading nuclear scientists.
—Shane Croucher, MSNBC Newsweek, 13 June 2025
Who Has Access To Infinite Einsteins Einstein had grave concerns about the use of atomic weapons.
—Lance Eliot, Forbes.com, 8 June 2025
See All Example Sentences for atomic
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Rob Nikolewski, San Diego Union-Tribune, 13 June 2025
Tehran Research Reactor The Tehran Research Reactor is at the headquarters of the Atomic Energy Organization of Iran, the civilian body overseeing the country’s atomic program.
—Jon Gambrell, Los Angeles Times, 13 June 2025
In a video announcing the military operation, Israeli Prime Minister Benjamin Netanyahu said the strikes hit Iran's main enrichment site, the Natanz atomic facility, and targeted Iran's leading nuclear scientists.
—Shane Croucher, MSNBC Newsweek, 13 June 2025
Who Has Access To Infinite Einsteins Einstein had grave concerns about the use of atomic weapons.
—Lance Eliot, Forbes.com, 8 June 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 18 Jun. 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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