subatomic
adjective
sub·atom·ic
ˌsəb-ə-ˈtä-mik 
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
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As the cosmos cooled and expanded, these specks combined to form subatomic particles such as protons and neutrons, which combined to form hydrogen, helium and lithium — the first and lightest elements — during the universe’s first three minutes.
—
Jenna Ahart, Quanta Magazine, 2 July 2025
In the quantum world, subatomic particles can enter quantum states of superposition (being in multiple states simultaneously) and entanglement (when two particles become linked, no matter how far apart).
—Reed Albergotti, semafor.com, 24 June 2025
Neutrinos are very common and incredibly small, being the subatomic particle with the smallest mass.
—Stephanie Edwards, Discover Magazine, 16 June 2025
An alternative take would be that the result—the most precise measurement ever made of the magnetic wobble of a strange subatomic particle called the muon—still remains the most significant challenge to the Standard Model’s supremacy.
—Eleni Petrakou, Scientific American, 8 June 2025
See All Example Sentences for subatomic
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Jenna Ahart, Quanta Magazine, 2 July 2025
In the quantum world, subatomic particles can enter quantum states of superposition (being in multiple states simultaneously) and entanglement (when two particles become linked, no matter how far apart).
—Reed Albergotti, semafor.com, 24 June 2025
Neutrinos are very common and incredibly small, being the subatomic particle with the smallest mass.
—Stephanie Edwards, Discover Magazine, 16 June 2025
An alternative take would be that the result—the most precise measurement ever made of the magnetic wobble of a strange subatomic particle called the muon—still remains the most significant challenge to the Standard Model’s supremacy.
—Eleni Petrakou, Scientific American, 8 June 2025
See All Example Sentences for subatomic
Cite this Entry
“Subatomic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/subatomic. Accessed 21 Jul. 2025.
Copy CitationMedical Definition
subatomic
adjective
sub·atom·ic
ˌsəb-ə-ˈtäm-ik
1
: of or relating to the inside of the atom
2
: of, relating to, or being particles smaller than atoms
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