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
The performance-per-watt frontier has shifted from photolithography to the atomic layer.
—
Sundeep Bajikar, Forbes.com, 1 Aug. 2025
On the day of the second atomic flash, confusing radio chatter about air raid planes would precede, only by a matter of minutes, the sudden loss of power within the maze.
—Charles Pellegrino, Deadline, 31 July 2025
Rare earths refer to 17 elements on the periodic table whose atomic structure gives them special magnetic properties.
—Magdalena Petrova,jeniece Pettitt,jason Reginato, CNBC, 29 July 2025
What would need to be included in a new nuclear deal remains unclear and Iran has not yet renewed nuclear negotiations with the U.S. after Washington levied significant strikes against its top atomic facilities last month in coordination with Israel.
—Caitlin McFall, FOXNews.com, 21 July 2025
See All Example Sentences for atomic
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Sundeep Bajikar, Forbes.com, 1 Aug. 2025
On the day of the second atomic flash, confusing radio chatter about air raid planes would precede, only by a matter of minutes, the sudden loss of power within the maze.
—Charles Pellegrino, Deadline, 31 July 2025
Rare earths refer to 17 elements on the periodic table whose atomic structure gives them special magnetic properties.
—Magdalena Petrova,jeniece Pettitt,jason Reginato, CNBC, 29 July 2025
What would need to be included in a new nuclear deal remains unclear and Iran has not yet renewed nuclear negotiations with the U.S. after Washington levied significant strikes against its top atomic facilities last month in coordination with Israel.
—Caitlin McFall, FOXNews.com, 21 July 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 5 Aug. 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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