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  1. neu·tri·no
    IPA[n(y)o͞oˈtrēnō]
  2. noun

    • 1. a neutral subatomic particle with a mass close to zero and half-integral spin, rarely reacting with normal matter. Three kinds of neutrinos are known, associated with the electron, muon, and tau particle.

  3. Variation

    • n.: noun: neutrino, plural noun: neutrinos

    • noun

      a neutral subatomic particle with a mass close to zero and half-integral spin, which rarely reacts with normal matter. Three kinds of neutrinos are known, associated with the electron, muon, and tau particle.
    • noun

      a neutrino of the type associated with the tau particle.
    • noun

      a neutrino of the type associated with the tau particle.
    • noun

      a unit used in expressing the detected flux of neutrinos from the sun, equal to 10−36 neutrino captures per target atom per second.
    • noun

      a unit used in expressing the detected flux of neutrinos from the sun, equal to 10−36 neutrino captures per target atom per second.
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