antineutrino

noun

an·​ti·​neu·​tri·​no
ˌan-tē-nü-ˈtrē-(ˌ)nō,
-nyü-,
ˌan-tī- How to pronounce antineutrino (audio)
: the antiparticle of the neutrino

Examples of antineutrino in a Sentence

Recent Examples on the Web
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This special liquid emits a tiny flash of light when an antineutrino interacts. Mrigakshi Dixit, Interesting Engineering, 26 Aug. 2025 Neutrinos pair with antineutrinos, which scientists think mirror their behavior. Eric Baculinao, NBC News, 31 Oct. 2024 Sitting still, a muon decays into an electron, a neutrino, and an antineutrino in 2.2 microseconds. Byadrian Cho, science.org, 28 Mar. 2024 Also present in this pool of particles were neutrinos, which are very tiny, weakly interacting particles, and antineutrinos, their antimatter counterparts. Anne-Katherine Burns, The Conversation, 26 July 2023 Electron scattering experiments measure where an electron touches a quark’s charge, and neutrino experiments measure where an antineutrino changes a quark’s flavor. Anashe Bandari, Scientific American, 16 Mar. 2023 But the specific oscillation here, electron antineutrino to sterile neutrino, should take place quickly. John Timmer, Ars Technica, 11 Jan. 2023 The light in each beat reveals two things: The first flash indicates the energy of the antineutrino; the second confirms that the particle was an antineutrino. Dolly Setton, Discover Magazine, 30 July 2014

Word History

First Known Use

1934, in the meaning defined above

Time Traveler
The first known use of antineutrino was in 1934

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Cite this Entry

“Antineutrino.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antineutrino. Accessed 10 Sep. 2025.

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