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

Here, people live and work—about 150 per week in summer and up to 42 in winter—in an elevated two-story steel compound, studying astrophysics, neutrinos, glaciers, climate change, and some of the cleanest air on Earth. —Laura Dannen Redman, Robb Report, 29 Mar. 2026

And many hoped that the observation of faster-than-light neutrinos would portend a revolution in physics, but those hopes evaporated with the discovery of a loose cable at the OPERA experiment. —Big Think, 19 Mar. 2026

The upgrade will support higher-intensity beams for the neutrino program, including the Deep Underground Neutrino Experiment. —Georgina Jedikovska, Interesting Engineering, 10 Mar. 2026

Boyle’s hypothesis also predicts that dark matter could be explained by a particular kind of neutrino. —Sarah Scoles, Scientific American, 10 Feb. 2026

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