elementary particle(redirected from Elementary entity)
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Any subatomic particle, such as one of the fundamental fermions or gauge bosons, that may be a component of other particles but is not made of components itself. Also called fundamental particle.
(General Physics) any of several entities, such as electrons, neutrons, or protons, that are less complex than atoms and are regarded as the constituents of all matter. Also called: fundamental particle
any of the fundamental units of matter or radiation, including such particles or quanta as the leptons, the hadrons, the photon, and the graviton.
Any of the smallest known units of matter, such as quarks and neutrinos. Elementary particles are not made up of smaller units.
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|Noun||1.||elementary particle - (physics) a particle that is less complex than an atom; regarded as constituents of all matter|
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
antilepton - the antiparticle of a lepton
antiparticle - a particle that has the same mass as another particle but has opposite values for its other properties; interaction of a particle and its antiparticle results in annihilation and the production of radiant energy
antiquark - the antiparticle of a quark
hadron - any elementary particle that interacts strongly with other particles
lepton - an elementary particle that participates in weak interactions; has a baryon number of 0
subatomic particle, particle - a body having finite mass and internal structure but negligible dimensions
quark - (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"
strange particle - an elementary particle with non-zero strangeness
cosmic string, string - (cosmology) a hypothetical one-dimensional subatomic particle having a concentration of energy and the dynamic properties of a flexible loop
weakly interacting massive particle, WIMP - a hypothetical subatomic particle of large mass that interacts weakly with ordinary matter through gravitation; postulated as a constituent of the dark matter of the universe
atom - (physics and chemistry) the smallest component of an element having the chemical properties of the element