pion

noun

pi·​on ˈpī-ˌän 

: a meson that is a combination of up and down quarks and antiquarks, that may be positive, negative, or neutral, and that has a mass about 270 times that of the electron

pionic

pī-ˈä-nik 

adjective

Examples of pion in a Sentence

Recent Examples on the Web

As per Tanja Horn, PhD, a professor at The Catholic University of America, the EIC will allow scientists to study pion and kaon structures and pursue high-precision studies of proton spin. — Georgina Jedikovska, Interesting Engineering, 21 Aug. 2026

Physicists had seen faint hints that something strange was going on with the pion rate. — Matt Von Hippel, Quanta Magazine, 29 July 2026

Above some critical energy threshold, interactions between those photons and a cosmic ray will be energetic enough that additional particles, like pions, will spontaneously be created. — Big Think, 30 Jan. 2026

They are created when protons and neutrons collide, which generates particles known as pions that then decay into muons. — IEEE Spectrum, 3 Dec. 2024

Word History

Etymology

contraction of pi-meson

First Known Use

1950, in the meaning defined above

Rhymes for pion

• aune
• bon
• bonne
• brawn
• chon
• con
• conn
• crohn
• dawn
• drawn
• fawn
• gone