neutrino
noun
neu·tri·no nü-ˈtrē-(ˌ)nō 
nyü-
plural neutrinos
: 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
neutrinoless
nü-ˈtrē-(ˌ)nō-ləs
adjective nyü-
Example Sentences
Recent Examples on the Web Results over the past two years show that the capture rate is less than 0.2 neutrino per day. 
Mark Fischetti, Scientific American, 14 May 2022 But in 1956, in an experiment not unlike LSND, there the neutrino was. Quanta Magazine, 28 Oct. 2021 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 See More
Mark Fischetti, Scientific American, 14 May 2022 But in 1956, in an experiment not unlike LSND, there the neutrino was. Quanta Magazine, 28 Oct. 2021 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 See More Word History
Etymology
Italian, from neutro neutral, neuter, from Latin neutr-, neuter
First Known Use
1934, in the meaning defined above
Medical Definition
neutrino
noun
neu·tri·no n(y)ü-ˈtrē-(ˌ)nō
plural neutrinos
: 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