from The American Heritage® Dictionary of the English Language, 4th Edition
- n. See elementary particle.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. any of the subatomic particles that does not consist of other, smaller particles; the gauge bosons, leptons and quarks
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (physics) a particle that is less complex than an atom; regarded as constituents of all matter
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