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[had-ron] /ˈhæd rɒn/
noun, Physics.
any elementary particle that is subject to the strong interaction. Hadrons are subdivided into baryons and mesons.
Compare quark.
Origin of hadron
1962; < Greek hadr(ós) thick, bulky + -on1
Related forms
[ha-dron-ik] /hæˈdrɒn ɪk/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for hadron


any elementary particle capable of taking part in a strong nuclear interaction and therefore excluding leptons and photons
Derived Forms
hadronic, adjective
Word Origin
C20: from Greek hadros heavy, from hadēn enough + -on
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for hadron

1962, from Greek hadros "thick, bulky," the primary sense, also "strong, great; large, well-grown, ripe," from PIE root *sa- "to satisfy" (see sad). With elementary particle suffix -on. Coined in Russian as adron.

Online Etymology Dictionary, © 2010 Douglas Harper
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hadron in Science
Any of a class of subatomic particles composed of a combination of two or more quarks or antiquarks. Quarks (and antiquarks) of different colors are held together in hadrons by the strong nuclear force. Hadrons include both baryons (composed of three quarks or three antiquarks) and mesons (composed of a quark and an antiquark). The combination of quark colors in a hadron must be neutral, for example, red and antired (as in a pion) or red, blue, and green (as in a proton). Compare baryon, lepton.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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