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

Pauli’s neutrino, proposed in 1930, was detected in 1956. —Big Think, 23 Feb. 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

The mission aimed to detect radio signals created when neutrinos hit the ice. —Adam Harrington, CBS News, 9 Feb. 2026

The particle in question was a neutrino with an energy 100,000 times greater than that of the highest-energy particles produced by the world's largest and most powerful particle accelerator, the Large Hadron Collider (LHC). —Robert Lea, Space.com, 5 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