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 (ăn′tē-no͞o-trē′nō, -nyo͞o-, ăn′tī-)
n. pl. an·ti·neu·tri·nos
The antiparticle of a neutrino.


n, pl -nos
(Atomic Physics) the antiparticle of a neutrino; a particle having oppositely directed spin to a neutrino, that is, spin in the direction of its momentum


(ˌæn ti nuˈtri noʊ, -nyu-, ˌæn taɪ-)

n., pl. -nos.
the antiparticle of a neutrino, distinguished from the neutrino by its equal but opposite spin.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.antineutrino - the antiparticle of a neutrino
antilepton - the antiparticle of a lepton
References in periodicals archive ?
Such oppositely moving neutrinos would make uncertain the choice of the charge sign in the next star, being admixed to the proper antineutrinos generated by the positrons.
I cannot say with the same empirical certainty that for every weak graduate from institutional africology there is a correspondingly strong one, as physicists can do regarding matter and antimatter, electrons and positrons, protons and antiprotons, quarks and anti-quarks, neutrinos and antineutrinos, and so on.
If neutrinos and their antimatter equivalent, antineutrinos, oscillate differently, this could provide the explanation.
A unique feature of SN1987A was the detection of a neutrino burst when two neutrino observatories, Kamiokande II and IMB, detected 11 and 8 antineutrinos respectively and this event arguably led to the beginning of neutrino astronomy.
25]) antineutrinos race away from Earth and into space.
The curve for neutrinos implies that the transition temperature for neutrinos is around 291 K, which means that the density of antineutrinos from the big bang for present neutrino background temperatures (~ 2 K) is not negligible.
KamLAND was specifically designed to study antineutrinos.
However, neutrinos and antineutrinos can be told apart since they have a different direction of spin, or helicity.
It should be noted that an upper antiquark and an up quark usually forms an n particle, which may live about a few tens of nanoseconds and decay into other particles such as photons and pions, which further decay to nuons and nuon neutrinos and antineutrinos.
Together, the six reactors spew antineutrinos, the antimatter versions of neutrinos, at a rate of more than 3 billion trillion per second.
While MiniBooNE used neutrinos to find the sterile neutrino, LSND used antineutrinos - the antimatter equivalent.
It was originally assumed that parity is conserved upon collisions, and this implied that elementary particles have antiparticles, such as neutrinos and antineutrinos, such that the antiparticle subscribed to the same physical laws as the particle.