antineutrino
noun
an·ti·neu·tri·no 
ˌan-tē-nü-ˈtrē-(ˌ)nō,
-nyü-,
ˌan-tī- : the antiparticle of the neutrino
Example Sentences
Recent Examples on the Web Such a dual reaction can occur only if neutrinos and antineutrinos are one and the same particle, as the Italian physicist Ettore Majorana hypothesized in 1937. 
Quanta Magazine, 15 Oct. 2013 In neutrino-less double beta decay, both processes would happen in tandem: The antineutrino produced by the first type of decay would serve as the neutrino that enters into the second. Quanta Magazine, 15 Oct. 2013 There are three types of antineutrino just as there are three types of regular neutrino—electron, muon, and tau. Avery Thompson, Popular Mechanics, 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, 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, 27 Mar. 2018 Thus, a positron from an antineutrino will create a flash of light in a WATCHMAN tank. Jesse Emspak, Scientific American, 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, 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, 9 Aug. 2017 See More
Quanta Magazine, 15 Oct. 2013 In neutrino-less double beta decay, both processes would happen in tandem: The antineutrino produced by the first type of decay would serve as the neutrino that enters into the second. Quanta Magazine, 15 Oct. 2013 There are three types of antineutrino just as there are three types of regular neutrino—electron, muon, and tau. Avery Thompson, Popular Mechanics, 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, 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, 27 Mar. 2018 Thus, a positron from an antineutrino will create a flash of light in a WATCHMAN tank. Jesse Emspak, Scientific American, 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, 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, 9 Aug. 2017 See More Word History
First Known Use
1934, in the meaning defined above