neu·​tri·​no | \nü-ˈtrē-(ˌ)nō, nyü-\
plural neutrinos

Definition of neutrino 

: an uncharged elementary particle that is believed to have a very small mass, that has any of three forms, and that interacts only rarely with other particles

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Other Words from neutrino

neutrinoless \ nü-​ˈtrē-​(ˌ)nō-​ləs , nyü-​ \ adjective

Examples of neutrino in a Sentence

Recent Examples on the Web

Since its discovery as a neutrino source less than a year ago, blazar TXS 0506+056 has been the subject of intensive scrutiny. Smithsonian, "Scientists Explain The Thrill of Detecting a Neutrino From a Far-Off Galaxy," 12 July 2018 MicroBooNE, which should deliver its first data later this year, can distinguish between neutrino signals and impostors. Clara Moskowitz, Scientific American, "Evidence Builds for a New Kind of Neutrino," 7 June 2018 Gamma rays are associated with the particle acceleration that produces both neutrinos and cosmic rays. Author: Sarah Kaplan, Anchorage Daily News, "In a cosmic first, scientists detect ‘ghost particles’ from a distant galaxy," 12 July 2018 One of the neutrino-catching probes at the IceCube Neutrino Observatory. Robert Lee Hotz, WSJ, "Scientists Track Neutrinos Through Ice to Their Source in the Cosmos," 12 July 2018 For every individual high-energy neutrino hit, Halzen said, roughly 10,000 or 100,000 more pass through unscathed. Amina Khan,, "After years of searching, scientists finally trace high-energy neutrinos to a distant blazar," 12 July 2018 Completed in 2010, the IceCube neutrino detector snares these elusive particles in a cubic kilometer of Antarctic ice. Daniel Clery, Science | AAAS, "Ghostly particle caught in polar ice ushers in new way to look at the universe," 12 July 2018 The neutrino is nearly massless and flies through space at almost the speed of light. Mark Bowen, Scientific American, "Neutrinos on Ice: Astronomers' Long Hunt for Source of Extragalactic "Ghost Particles" Pays Off," 12 July 2018 The discovery of a single neutrino was made in September by the IceCube Neutrino Observatory at the South Pole, and confirmed by telescopes around the globe and in Earth's orbit. Doyle Rice, USA TODAY, "'Ghost particles' from outer space: Scientists discover distant source of neutrinos," 12 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'neutrino.' 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 neutrino

1934, in the meaning defined above

History and Etymology for neutrino

Italian, from neutro neutral, neuter, from Latin neutr-, neuter

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Last Updated

15 Nov 2018

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Time Traveler for neutrino

The first known use of neutrino was in 1934

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English Language Learners Definition of neutrino

physics : a particle that is smaller than an atom and that has no electrical charge


neu·​tri·​no | \n(y)ü-ˈtrē-(ˌ)nō \
plural neutrinos

Medical Definition of neutrino 

: an uncharged elementary particle that is believed to be massless or to have a very small mass, that has any of three forms, and that interacts only rarely with other particles

More from Merriam-Webster on neutrino

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