atomic
Americanadjective
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of, pertaining to, resulting from, or using atoms, atomic energy, or atomic bombs.
an atomic explosion.
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propelled or driven by atomic energy.
an atomic submarine.
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Chemistry. existing as free, uncombined atoms.
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extremely minute.
adjective
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of, using, or characterized by atomic bombs or atomic energy
atomic warfare
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of, related to, or comprising atoms
atomic hydrogen
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extremely small; minute
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logic (of a sentence, formula, etc) having no internal structure at the appropriate level of analysis. In predicate calculus, Fa is an atomic sentence and Fx an atomic predicate
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Relating to an atom or to atoms.
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Employing nuclear energy.
Other Word Forms
- atomically adverb
- nonatomic adjective
- nonatomical adjective
- nonatomically adverb
Etymology
Origin of atomic
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.
Rendered with atomic specks of red, blue and green that produce a darker purplish cast, its resonant effect is reinforced in the painted border Seurat added later, as he did to many of his seascapes.
From The Wall Street Journal • Mar. 28, 2026
Many have expressed fears of an Orwellian-style forever war, or worse, the use of the atomic weapon invented “to end all wars” in a twisted attempt to do so, poisoning the region as a byproduct.
From Los Angeles Times • Mar. 27, 2026
They paired these measurements with detailed ab initio simulations that tracked thousands of possible atomic pathways and calculated how likely decay was along each one.
From Science Daily • Mar. 24, 2026
The United States ended World War II by dropping two atomic bombs on Japan, the only use of nuclear weapons in history.
From Barron's • Mar. 19, 2026
The T-shirt inside had the word “Freddie” above the box from the periodic table that contains the atomic symbol Hg.
From "Odd One Out" by Nic Stone
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
