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

The idea that neutrinos were flying through me every second blew my mind. —Adam Frank, Big Think, 25 Sep. 2025

Exotic particles, unexpected neutrino behavior, or something stranger? —Kaif Shaikh, Interesting Engineering, 11 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

Different branches of science use and study neutrinos for different reasons. —Jorge Garay, Wired News, 19 Aug. 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