an·​ti·​neu·​tri·​no | \ -nü-ˈtrē-(ˌ)nō How to pronounce antineutrino (audio) , -nyü-\

Definition of antineutrino

: the antiparticle of the neutrino

Examples of antineutrino in a Sentence

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There are three types of antineutrino just as there are three types of regular neutrino—electron, muon, and tau. Avery Thompson, Popular Mechanics, "New Experiment Hints at Why the Universe Is Made of Something Rather Than Nothing," 8 Aug. 2016 With each collision that registers, DUNE scientists should be able to determine whether the neutrinos and antineutrinos have changed type — for example, from a muon neutrino to an electron neutrino. NBC News, "This bold experiment aims to solve one of the biggest mysteries in science," 8 May 2018 Sensors lining the inside of the cylinder will observe the occasional flashes generated when an antineutrino resulting from reactions in the Hartlepool nuclear power plant, about 15 miles away, slams into a particle in the detector liquid. Kenneth Chang, New York Times, "How to Spot a Nuclear Bomb Program? Look for Ghostly Particles," 27 Mar. 2018 Thus, a positron from an antineutrino will create a flash of light in a WATCHMAN tank. Jesse Emspak, Scientific American, "Detection of Ghostly Particles Could Unmask Illicit Nuclear Weapons," 1 May 2017 One type of radioactivity, called beta decay, releases either a positron and a neutrino or an electron and an antineutrino. Jesse Emspak, Scientific American, "Detection of Ghostly Particles Could Unmask Illicit Nuclear Weapons," 1 May 2017 That gas is what neutrinos — and antineutrinos, their counterpart just like matter and antimatter — hit in the detector, allowing scientists to see what occurs on the rare occasion the mysterious particles interact with atoms. Katharine Lackey, USA TODAY, "Secrets of the universe may lie in an old gold mine in South Dakota," 9 Aug. 2017 But the neutrino mixing matrix comes equipped with its own factor by which neutrinos and antineutrinos can violate CP symmetry. Natalie Wolchover, WIRED, "New Neutrino Anomaly Hints at a Matter-Antimatter Rift," 31 July 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'antineutrino.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of antineutrino

1934, in the meaning defined above

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The first known use of antineutrino was in 1934

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incapable of being surmounted or overcome

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