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an·ti·mat·ter
[an-tee-mat-er, an-tahy-]
NOUN [PHYSICS.]
1.
matter composed only of antiparticles, especially antiprotons, antineutrons, and positrons.
Source: Dictionary.com
antimatter | Define antimatter at Dictionary.com
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en.wikipedia.org/wiki/Antimatter

In particle physics, antimatter is a material composed of the antiparticle "partners" to the corresponding particles of ordinary matter. A particle and its antiparticle ...

home.cern/topics/antimatter

But when matter and antimatter come into contact, they annihilate – disappearing in a flash of energy. The Big Bang should have created equal amounts of ...

home.cern/topics/antimatter/matter-antimatter-asymmetry-problem

The Big Bang should have created equal amounts of matter and antimatter in the early universe. But today, everything we see from the smallest life forms on ...

www.symmetrymagazine.org/article/april-2015/ten-things-you-might-not-know-about-antimatter

Apr 28, 2015 ... Antimatter is the stuff of science fiction. In the book and film Angels and Demons, Professor Langdon tries to save Vatican City from an ...

www.newscientist.com/round-up/antimatter-mysteries

"No!" Vittoria said from above, breathless. "We must evacuate right now! You cannot take the antimatter out of here! If you bring it up, everyone outside will die! "

www.iop.org/resources/topic/archive/antimatter

The existence of antimatter was first predicted by Paul Dirac in papers published from 1928 onwards. Classical physics only allowed systems to have positive ...

www.exploratorium.edu/origins/cern/ideas/antimatter.html

Antimatter found its way into the popular imagination soon after its discovery in the early 1930s. "Star Trek" fans know antimatter as the high-energy fuel of the ...

www.particleadventure.org/antipreface.html

Matter and antimatter. For every type of matter particle we've found, there also exists a corresponding antimatter particle, or antiparticle. Antiparticles look and ...