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

Examples of neutrino in a Sentence

Recent Examples on the Web Given the detector’s size and great distance from the collision point, FASERn will study extremely high energy neutrinos, with an average energy of about a trillion electron volts, about 200 times higher energy than the average neutrino at MINOS. Don Lincoln, Forbes, 1 June 2021 In 2018 IceCube reported a neutrino from a giant flaring blazar. Katrina Miller, Scientific American, 27 Apr. 2021 By giving a neutrino of its own to both the electron and the muon, the pairing up helped show how to organize and account for the growing table of elementary particles. Washington Post, 17 Dec. 2020 Yet a sterile neutrino would be the ghostliest of them all. William Charles Louis, Scientific American, 1 July 2020 What scientists eventually figured out is that a neutrino is not a pure object. William Charles Louis, Scientific American, 1 July 2020 But despite a decade of hardships endured by Gorham and his colleagues, by 2016 Anita had yet to detect a single cosmic neutrino. Daniel Oberhaus, Wired, 12 June 2020 The excitement here stems from the fact that one promising dark matter candidate, a brand of particle known as a sterile neutrino, is expected to naturally decay into ordinary matter and produce just this kind of emission line. Clara Moskowitz, Scientific American, 26 Mar. 2020 There they are caught (some of them, anyway) by the Super-Kamiokande neutrino detector, a giant underground tank containing 50,000 tons of very pure water. Dennis Overbye, New York Times, 15 Apr. 2020

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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Time Traveler for neutrino

Time Traveler

The first known use of neutrino was in 1934

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Cite this Entry

“Neutrino.” Dictionary, Merriam-Webster, Accessed 18 Sep. 2021.

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More Definitions for neutrino



English Language Learners Definition of neutrino

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


neu·​tri·​no | \ n(y)ü-ˈtrē-(ˌ)nō How to pronounce neutrino (audio) \
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

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