psi particle

[ sahy, psahy ]

/ saɪ, psaɪ /

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noun Physics.

any of a family of mesons consisting of a charmed quark and a charmed antiquark.

an early name for the J/psi particle.

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Origin of psi particle

First recorded in 1970–75

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use psi particle in a sentence

There are two sets of steps leading from the front doors of Phi Kappa Psi house.
I Was Gang Raped at a UVA Frat 30 Years Ago, and No One Did Anything|Liz Seccuro|December 16, 2014|DAILY BEAST
The bonds of Phi Kappa Psi brotherhood were too strong to break.
I Was Gang Raped at a UVA Frat 30 Years Ago, and No One Did Anything|Liz Seccuro|December 16, 2014|DAILY BEAST
The Charlottesville Police did indeed have jurisdiction over the Phi Kappa Psi house.
I Was Gang Raped at a UVA Frat 30 Years Ago, and No One Did Anything|Liz Seccuro|December 16, 2014|DAILY BEAST
I have not sued Phi Kappa Psi, the University of Virginia, or any of the individuals involved.
I Was Gang Raped at a UVA Frat 30 Years Ago, and No One Did Anything|Liz Seccuro|December 16, 2014|DAILY BEAST

Indeed, many cutting-edge physicians are manipulating the diet to lower particle number.
The AHA’s Absurd Saturated Fat Obsession|Dr. Barbara H. Roberts|June 3, 2014|DAILY BEAST
This, as a piece of pure economics, does not interest the individual employer a particle.
The Unsolved Riddle of Social Justice|Stephen Leacock
I can tell you, my dear idealist—you have not changed a particle, by the way—that there is another side you have never seen.
Ancestors|Gertrude Atherton
Let us conceive a particle of air situated immediately over the earth's polar axis.
Outlines of the Earth's History|Nathaniel Southgate Shaler
Then let us imagine the particle moving toward the equator with the speed of an ordinary wind.
Outlines of the Earth's History|Nathaniel Southgate Shaler
It was a hair-raising problem, too, and called for every ounce of nerve and every particle of skill the boy possessed.
Motor Matt's "Century" Run|Stanley R. Matthews

British Dictionary definitions for psi particle

psi particle

noun

See J/psi particle

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for psi particle (1 of 2)

psi′ particle

[ sī′prīm′, psī′- ]

An electrically neutral meson having a mass 7,213 times that of the electron and a mean lifetime of approximately 1 X 10-20 seconds, composed, like the J/psi particle, of a charm-anticharm quark pair. See Table at subatomic particle.

Scientific definitions for psi particle (2 of 2)

psi particle

[ sī, psī ]

See J/psi particle.