neutrino
noun
neu·tri·no
nü-ˈtrē-(ˌ)nō 
nyü-
plural neutrinos
: 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
Examples of neutrino in a Sentence
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Exotic particles, unexpected neutrino behavior, or something stranger?
—
Kaif Shaikh, Interesting Engineering, 11 Sep. 2025
But for the neutrinos — the uncharged leptons — their status as a spin-½ particle is a little different.
—Ethan Siegel, Big Think, 9 Sep. 2025
That's because baryons would have disappeared since the Big Bang, as they are converted to dark energy droplets, thus allowing neutrinos to make a contribution in line with measurements of their abundance.
—Robert Lea, Space.com, 24 Aug. 2025
Precise observations of solar neutrinos also point to new physics.
—Bruce Dorminey, Forbes.com, 12 Aug. 2025
See All Example Sentences for neutrino
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Kaif Shaikh, Interesting Engineering, 11 Sep. 2025
But for the neutrinos — the uncharged leptons — their status as a spin-½ particle is a little different.
—Ethan Siegel, Big Think, 9 Sep. 2025
That's because baryons would have disappeared since the Big Bang, as they are converted to dark energy droplets, thus allowing neutrinos to make a contribution in line with measurements of their abundance.
—Robert Lea, Space.com, 24 Aug. 2025
Precise observations of solar neutrinos also point to new physics.
—Bruce Dorminey, Forbes.com, 12 Aug. 2025
See All Example Sentences for neutrino
Cite this Entry
“Neutrino.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neutrino. Accessed 15 Sep. 2025.
Copy CitationKids Definition
neutrino
noun
neu·tri·no
n(y)ü-ˈtrē-nō
plural neutrinos
: an uncharged elementary particle believed to have little or no mass
Medical Definition
neutrino
noun
neu·tri·no
n(y)ü-ˈtrē-(ˌ)nō
plural neutrinos
: 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
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