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

Yet multiple generations of empirical experimentation have indisputably shown that neutrinos do have mass. —Lyndie Chiou, Scientific American, 30 Apr. 2025

The neutrino has only ever been observed in its left-handed form. —Zack Savitsky, Quanta Magazine, 14 May 2025

Frieman suggests that something else, perhaps an unknown particle, might be mimicking a negative-mass neutrino. —Lyndie Chiou, Scientific American, 30 Apr. 2025

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

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