subatomic

adjective

sub·​atom·​ic ˌsəb-ə-ˈtä-mik How to pronounce subatomic (audio)
1
: of or relating to the inside of the atom
2
: of, relating to, or being particles smaller than atoms

Examples of subatomic in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In its earliest days, the Universe was a hot, dense soup of subatomic particles, including hydrogen and helium nuclei, aka baryons. Jennifer Ouellette, Ars Technica, 19 Mar. 2025 What is Quantum Computing? Quantum computing is related to the enigmatic field of subatomic physics, which bases computations on states of uncertainty at the atomic level. Chuck Brooks, Forbes, 22 Feb. 2025 Unlike classical computers which use binary bits, quantum computers use quantum bits — or qubits — which are usually electrons, photons, or another subatomic particle. Britney Nguyen, Quartz, 27 Feb. 2025 Back in 1937, Italian physicist Ettore Majorana described a subatomic particle named a Majorana fermion with a unique quantum mechanical state that's resistant to local disturbances. New Atlas, 20 Feb. 2025 See All Example Sentences for subatomic

Word History

First Known Use

1874, in the meaning defined at sense 1

Time Traveler
The first known use of subatomic was in 1874

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Cite this Entry

“Subatomic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/subatomic. Accessed 2 Apr. 2025.

Medical Definition

subatomic

adjective
sub·​atom·​ic ˌsəb-ə-ˈtäm-ik How to pronounce subatomic (audio)
1
: of or relating to the inside of the atom
2
: of, relating to, or being particles smaller than atoms
Last Updated: - Updated example sentences
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