neu·​tri·​no | \ nü-ˈtrē-(ˌ)nō How to pronounce neutrino (audio) , nyü-\
plural neutrinos

Definition of neutrino

: an uncharged elementary particle that is believed to have a very small mass, that has any of three forms, and that interacts only rarely with other particles

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Other Words from neutrino

neutrinoless \ nü-​ˈtrē-​(ˌ)nō-​ləs How to pronounce neutrinoless (audio) , nyü-​ \ adjective

Examples of neutrino in a Sentence

Recent Examples on the Web

So the signature of the collision is a muon, a neutrino, and four jets. Jennifer Ouellette, Ars Technica, "MIT physicists: Social networks could hold the key to finding new particles," 31 July 2019 The visitor, an ultrahigh-energy cosmic neutrino, bumped into ice more than a mile beneath the South Pole, where detectors from the IceCube experiment were waiting to catch it. Quanta Magazine, "Neutrinos Linked With Cosmic Source for the First Time," 12 July 2018 By tracing a neutrino’s path back, scientists found a blazar, a particle-firing galaxy that has a rapidly spinning black hole at its center and twin poles like gun barrels that blast particles into space. Mark Johnson, Milwaukee Journal Sentinel, "UW-Madison scientists expand effort to solve mysteries of universe inside South Pole ice," 16 July 2019 The existence of a sterile neutrino would revolutionize physics from the smallest to the largest scales. Quanta Magazine, "Evidence Found for a New Fundamental Particle," 1 June 2018 Such a neutrino would be a candidate for dark matter, an invisible substance physicists are all but certain pervades our universe, yet have never detected. Nathaniel Scharping, Discover Magazine, "Why Fermilab is Making A Neutrino Detector 800 Miles Long," 12 Mar. 2019 This is still a strictly theoretical kind of neutrino that would come from dark matter. John Wenz, Popular Mechanics, "Blaze It: Far-Out High-Energy Neutrino Came From a Blazar," 12 July 2018 Along the axis, a high-energy jet of particles sent photons and neutrinos racing in our direction at or near the speed of light. Smithsonian, "Scientists Explain The Thrill of Detecting a Neutrino From a Far-Off Galaxy," 12 July 2018 These particles, however, are likely to be the source of highly energetic neutrinos. John Timmer, Ars Technica, "Supermassive black hole shot a neutrino straight at Earth," 12 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'neutrino.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of neutrino

1934, in the meaning defined above

History and Etymology for neutrino

Italian, from neutro neutral, neuter, from Latin neutr-, neuter

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Statistics for neutrino

Last Updated

9 Aug 2019

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Time Traveler for neutrino

The first known use of neutrino was in 1934

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English Language Learners Definition of neutrino

physics : a particle that is smaller than an atom and that has no electrical charge


neu·​tri·​no | \ n(y)ü-ˈtrē-(ˌ)nō How to pronounce neutrino (audio) \
plural neutrinos

Medical Definition of neutrino

: an uncharged elementary particle that is believed to be massless or to have a very small mass, that has any of three forms, and that interacts only rarely with other particles

More from Merriam-Webster on neutrino

Rhyming Dictionary: Words that rhyme with neutrino Encyclopedia article about neutrino

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