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
Example Sentences
Recent Examples on the Web This is only possible with the help of quantum mechanical effects, a field of physics that describes behavior exhibited only on a subatomic scale. 
Christiaan Hetzner, Fortune, 11 June 2021 First is Structure, which begins with the Universe and ends with subatomic particles. Diana Gitig, Ars Technica, 13 Aug. 2022 WIMPs are believed to be heavy and slow-moving particles with masses between one and 1,000 times that of a proton, created in the early universe as other subatomic particles collided. Robert Lea, Popular Mechanics, 29 July 2022 The archeological surprise is just one of many feats that would be difficult or impossible without subatomic particles. James Riordon, Scientific American, 29 July 2022 So far, scientists discovered three new subatomic particles, Reuters reported. Sudiksha Kochi, USA TODAY, 26 July 2022 Another other notable anomaly is in the mass of the W-boson, a subatomic particle involved in the action of the weak nuclear force that governs some types of radioactivity. Tom Metcalfe, NBC News, 14 June 2022 Most exotic hadrons, which are subatomic particles, are made up of two or three elemental particles called quarks. Bradford Betz, Fox News, 6 July 2022 The smashups are analyzed with the help of specialized detectors arrayed around the ring in the hope that the data will reveal previously unknown subatomic particles. Juanje Gómez, WSJ, 5 July 2022 See More
Christiaan Hetzner, Fortune, 11 June 2021 First is Structure, which begins with the Universe and ends with subatomic particles. Diana Gitig, Ars Technica, 13 Aug. 2022 WIMPs are believed to be heavy and slow-moving particles with masses between one and 1,000 times that of a proton, created in the early universe as other subatomic particles collided. Robert Lea, Popular Mechanics, 29 July 2022 The archeological surprise is just one of many feats that would be difficult or impossible without subatomic particles. James Riordon, Scientific American, 29 July 2022 So far, scientists discovered three new subatomic particles, Reuters reported. Sudiksha Kochi, USA TODAY, 26 July 2022 Another other notable anomaly is in the mass of the W-boson, a subatomic particle involved in the action of the weak nuclear force that governs some types of radioactivity. Tom Metcalfe, NBC News, 14 June 2022 Most exotic hadrons, which are subatomic particles, are made up of two or three elemental particles called quarks. Bradford Betz, Fox News, 6 July 2022 The smashups are analyzed with the help of specialized detectors arrayed around the ring in the hope that the data will reveal previously unknown subatomic particles. Juanje Gómez, WSJ, 5 July 2022 See More Word History
First Known Use
1874, in the meaning defined at sense 1
Medical 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