follow Dictionary.com

Today's Word of the Day means...

baryon

[bar-ee-on] /ˈbær iˌɒn/
noun, Physics.
1.
a proton, neutron, or any elementary particle that decays into a set of particles that includes a proton.
Compare quark model.
Origin
1950-1955
1950-55; < Greek barý(s) heavy + (fermi)on
Related forms
baryonic
[bar-ee-on-ik] /ˌbær iˈɒn ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples for baryon
  • The proton is a baryon that consists of two up and one down quark, and the neutron is two down and one up.
  • When a baryon cloud collapses, the particles interact, converting some of the kinetic energy into light and heat.
  • If you know of a possible reason the landscape implies baryon number conservation, let's hear it.
  • In other words, the total baryon and lepton number of the reactants must equal the total baryon and lepton number of the products.
  • baryon oscillation as a ruler to measure the universe.
  • The baryon density is also constrained by the nucleosynthesis models of the early universe.
  • Hydrodynamic expansion entropy, baryon number conservation.
British Dictionary definitions for baryon

baryon

/ˈbærɪˌɒn/
noun
1.
any of a class of elementary particles that have a mass greater than or equal to that of the proton, participate in strong interactions, and have a spin of 1/2. Baryons are either nucleons or hyperons. The baryon number is the number of baryons in a system minus the number of antibaryons
Word Origin
C20: bary-, from Greek barus heavy + -on
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
Cite This Source
baryon in Science
baryon
  (bār'ē-ŏn')   
Any of a family of subatomic particles composed of three quarks or three antiquarks. They are generally more massive than mesons, and interact with each other via the strong force. Baryons form a subclass of hadrons and are subdivided into nucleons and hyperons. Protons and neutrons are baryons. See Table at subatomic particle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of The Day

Difficulty index for baryon

Most English speakers likely know this word

Word Value for baryon

11
12
Scrabble Words With Friends