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
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The neutrino, as the subatomic particle is called, was found by researchers at the Cubic Kilometer Neutrino Telescope, or KM3NeT collaboration, a global team of more than 360 scientists. Sara Hashemi, Smithsonian Magazine, 14 Feb. 2025 Neutrinos are ghostly subatomic particles that can travel in a straight line for billions of light-years, passing unhindered through galaxies, stars and anything else in their path. Doyle Rice, USA TODAY, 13 Feb. 2025 The neutrino bashed into a water molecule outside the detector, creating a burst of particles, including a high-energy muon—a type of subatomic particle that’s similar to an electron but 200 times heavier. Meghan Bartels, Scientific American, 12 Feb. 2025 In analog quantum computing, qubits can serve as analogues of other objects displaying quantum behavior, such as molecules, atoms, and subatomic particles. IEEE Spectrum, 6 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

Dictionary Entries Near subatomic

Cite this Entry

“Subatomic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/subatomic. Accessed 23 Feb. 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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