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The Collaborative International Dictionary
baryon

baryon \baryon\ n. 1. any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1.

Syn: heavy particle.

Wiktionary
baryon

n. (context particle English) A heavy subatomic particle created by the binding of quarks by gluons; a hadron containing three quarks. Baryons have half-odd integral spin and are thus fermions. This category includes the common proton and neutron of the atomic nucleus.

WordNet
baryon

n. any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1 [syn: heavy particle]

Wikipedia
Baryon

A baryon is a composite subatomic particle made up of three quarks (as distinct from mesons, which are composed of one quark and one antiquark). Baryons and mesons belong to the hadron family of particles, which are the quark-based particles. The name "baryon" comes from the Greek word for "heavy" (βαρύς, barys), because, at the time of their naming, most known elementary particles had lower masses than the baryons.

As quark-based particles, baryons participate in the strong interaction, whereas leptons, which are not quark-based, do not. The most familiar baryons are the protons and neutrons that make up most of the mass of the visible matter in the universe. Electrons (the other major component of the atom) are leptons.

Each baryon has a corresponding antiparticle (antibaryon) where quarks are replaced by their corresponding antiquarks. For example, a proton is made of two up quarks and one down quark; and its corresponding antiparticle, the antiproton, is made of two up antiquarks and one down antiquark.

Usage examples of "baryon".

Photino creatures like birds - photino birds - had fluttered out through the baryon stars as if they did not exist, colonizing shadow world after shadow world.

Paul imagined the horror of the photino civilization as the irrelevant froth of baryons through which they moved turned into a source of deadly danger, perhaps threatening the ultimate survival of their civilization.

K-mesons, Higgs bosons, intermediate vector bosons, baryons, tachyons.

He spoke of problems with linear and angular momentum, potential fields, quantum tunneling by photons, leptons, baryons, gravitons.

Just as baryons had slithered into dark matter potholes, so-on a much smaller scale - photinos collected in the pinpoint gravity wells of the new stars.

Baryons - protons and neutrons, the components of light, visible matter - and photinos - their dark matter analogues -existed largely independently of each other, interacting only through gravitational attraction.

Probably a supernova had ripped apart a baryon star, laying waste to its host shadow world in the process.

It is well known, is it not, that decay of the proton would violate the law of conservation of baryon number.