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

neutrinoless

nü-ˈtrē-(ˌ)nō-ləs 

nyü-

adjective

Examples of neutrino in a Sentence

Recent Examples on the Web

But that may be more the product of the neutrino’s innate weirdness rather than any representation of KATRIN’s shortcomings. —Gayoung Lee, Scientific American, 14 Apr. 2025

The record-breaking neutrino, named KM3-230213A, had the energy of 220 million billion electron volts. —Ashley Strickland, CNN, 12 Feb. 2025

Combined, these tell us that the muon had to be the product of a neutrino interacting with the ocean near the detector. —John Timmer, Ars Technica, 12 Feb. 2025

For instance, a range of telescopes that can detect light, neutrinos and gravitational waves could track the way in which a collapsing star can generate a gamma-ray burst and kilonova. —Charles Q. Choi, Space.com, 7 Apr. 2025

Word History

Etymology

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

First Known Use

1934, in the meaning defined above

Rhymes for neutrino

• amino
• carlino
• casino
• imino
• ladino
• latino
• merino
• argentino
• campesino
• cappuccino
• diamino
• filipino

Kids 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