quantum theory
noun
1
: a theory in physics based on the concept of the subdivision of radiant energy into finite quanta and applied to numerous processes involving transference or transformation of energy in an atomic or molecular scale
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Past winners of the Nobel physics prize include some of the most influential figures in the history of science, such as Albert Einstein, Pierre and Marie Curie, Max Planck and Niels Bohr, himself a pioneer of quantum theory.
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USA Today, 7 Oct. 2025
Awarding him alone seemed premature, and no experimental physicist in quantum theory had been nominated to share the honour.
—Kaif Shaikh, Interesting Engineering, 2 Oct. 2025
And that’s why quantum theory messes with the conventional second law.
—Quanta Magazine, 1 Oct. 2025
This is a key element in ongoing attempts to develop a quantum theory of gravity.
—Jennifer Ouellette, ArsTechnica, 11 Sep. 2025
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USA Today, 7 Oct. 2025
Awarding him alone seemed premature, and no experimental physicist in quantum theory had been nominated to share the honour.
—Kaif Shaikh, Interesting Engineering, 2 Oct. 2025
And that’s why quantum theory messes with the conventional second law.
—Quanta Magazine, 1 Oct. 2025
This is a key element in ongoing attempts to develop a quantum theory of gravity.
—Jennifer Ouellette, ArsTechnica, 11 Sep. 2025
See All Example Sentences for quantum theory
Cite this Entry
“Quantum theory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum%20theory. Accessed 8 Oct. 2025.
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