hadron

enUK

had·ron

H0007200 (hăd′rŏn′)n. Any of a class of subatomic particles that are composed of two or three quarks and participate in strong interactions. The class of hadrons is divided into the mesons and baryons.

[Greek hadros, thick; see sā- in Indo-European roots + -on.]

had·ron′ic adj.

hadron

(ˈhædrɒn) n (Nuclear Physics) any elementary particle capable of taking part in a strong nuclear interaction and therefore excluding leptons and photons[C20: from Greek hadros heavy, from hadēn enough + -on] hadˈronic adj

had•ron

(ˈhæd rɒn)

n. any of a group of elementary particles subject to the strong interaction, subdivided into baryons and mesons. [1962; < Greek hadr(ós) thick, bulky + -on¹] ha•dron′ic, adj.

Thesaurus

Noun

hadron - any elementary particle that interacts strongly with other particlesantibaryon - the antiparticle of a baryon; a hadron with a baryon number of -1antimeson - the antiparticle of a mesonantiquark - the antiparticle of a quarkbaryon, heavy particle - 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 +1elementary particle, fundamental particle - (physics) a particle that is less complex than an atom; regarded as constituents of all mattermeson, mesotron - an elementary particle responsible for the forces in the atomic nucleus; a hadron with a baryon number of 0quark - (physics) hypothetical truly fundamental particle in mesons and baryons; there are supposed to be six flavors of quarks (and their antiquarks), which come in pairs; each has an electric charge of +2/3 or -1/3; "quarks have not been observed directly but theoretical predictions based on their existence have been confirmed experimentally"

Translations

αδρόνιοhadrónhadron

hadron

Hadron

The generic name of a class of particles which interact strongly with one another. Examples of hadrons are protons, neutrons, the &pgr;, K, and D mesons, and their antiparticles. Protons and neutrons, which are the constituents of ordinary nuclei, are members of a hadronic subclass called baryons, as are strange and charmed baryons. Baryons have half-integral spin, obey Fermi-Dirac statistics, and are known as fermions. Mesons, the other subclass of hadrons, have zero or integral spin, obey Bose-Einstein statistics, and are known as bosons. The electric charges of baryons and mesons are either zero or ±1 times the charge on the electron. Masses of the known mesons and baryons cover a wide range, extending from the pi meson, with a mass approximately one-seventh that of the proton, to values of the order of 10 times the proton mass. The spectrum of meson and baryon masses is not understood. See Baryon, Bose-Einstein statistics, Fermi-Dirac statistics, Meson, Neutron, Proton

Based on an enormous body of data, hadrons are now thought to consist of elementary fermion constituents known as quarks which have electric charges of + |e| and |e|, where |e| is the absolute value of the electron charge. For example, a quark-antiquark pair makes up a meson, while three quarks constitute a baryon. See Elementary particle, Quarks

hadron

(had -ron) See elementary particles. See also Big Bang theory.

hadron

[′had‚rän] (particle physics) An elementary particle which has strong interactions.

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had·ron

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had•ron

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Hadron

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Words related to hadron

noun any elementary particle that interacts strongly with other particles

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