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antiproton

   Also found in: Wikipedia 0.06 sec.
an·ti·pro·ton  (nt-prtn, nt-)
n.
The antiparticle of the proton.
antiproton  (nt-prtn, nt-)
The antiparticle that corresponds to the proton.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.antiproton - an unstable negatively charged proton; the antiparticle of a proton
nucleon - a constituent (proton or neutron) of an atomic nucleus


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The scientists found telltale traces of the sigma-bs in the debris produced by more than 100 trillion collisions of protons and antiprotons that had occurred in the accelerator in the past 5 years.
Heavy finding by Science News
A normal, positively charged proton, for instance, finds its antimatter counterpart in a negatively charged antiproton.
Energy's future: the world need never run out of energy. In fact, ... by Behreandt, Dennis / The New American
Untold numbers of electrons and positrons, protons and antiprotons, neutrons and antineutrons canceling each other out, leaving behind the small residue of protons, neutrons and electrons that today form the Earth, the solar system, and all the galaxies in the universe.
The First Three Minutes by Offner, Susan / Kliatt
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