Definition of neutrino in English:


Syllabification: neu·tri·no
Pronunciation: /n(y)o͞oˈtrēnō

noun (plural neutrinos)

  • 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.
    More example sentences
    • The leptons consist of the charged electron, muon and tau, together with three electronically neutral particles - the electron neutrino, muon neutrinos and tau neutrinos.
    • The proton and the neutron are baryons; the electron, the muon, and the neutrino are leptons; whilst the pions are mesons.
    • The electron and muon neutrinos are easier to produce and detect than the tau neutrino.


mid 20th century: from Italian, diminutive of neutro 'neutral'.

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elaborate ornamentation of a vocal melody