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

Across the universe Detectors in the Mediterranean Sea picked up a cosmic neutrino that came from an unknown origin point in space in February 2023. —Ashley Strickland, CNN, 15 Feb. 2025

The incredibly high energy of this neutrino has been met with some skepticism. —Sara Hashemi, Smithsonian Magazine, 14 Feb. 2025

Difficult to detect, neutrinos are extremely tiny particles and are among the most abundant in the universe. —Doyle Rice, USA TODAY, 13 Feb. 2025

Of all the fundamental particles that make up the standard model of particle physics, neutrinos remain the most enigmatic. —Tom Hawking, Popular Science, 12 Feb. 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