10. 
    antimatter
    Material with properties equivalent to those of matter but with subatomic particles' quantum properties reversed; for example, particles' charges are opposite. Antimatter happens to be rare in our universe. However, it is believed that in the Big Bang equal quantities of matter and antimatter were c...
    Found op http://www.daviddarling.info/encyclopedia/A/antimatter.html
    
    
11. 
    antimatter
    antimatter: see antiparticle.
    Found op http://www.infoplease.com/ce6/sci/A0910314.html
    
    
12. 
    antimatter
    In physics, form of matter in which most of the attributes (such as electrical charge, magnetic moment, and spin) of elementary particles are reversed. These antiparticles can be created in particle accelerators, such as those at CERN in Geneva, Switzerland, and at Fermilab in the USA. In 1996 physi...
    Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0016267.html
    
    
13. 
    Antimatter
    A material made from antiparticles. The particles that are common in our universe are defined as matter and their antiparticles as antimatter. In the particle theory there is almost no a priori distinction between matter and antimatter. Their interactions are almost identical. The asymmetry of the ...
    Found op http://www2.slac.stanford.edu/vvc/glossary.html
    
    
14. 
    Antimatter
    Matter composed of the antiparticles ofnormal matter.
    Found op http://hepwww.rl.ac.uk/public/phil/glossary.html
    
    
15. 
    Antimatter
    A material made from antiparticles. The particles that are common in our universe are defined as matter and their antiparticles as antimatter. In the particle theory there is almost no a priori distinction between matter and antimatter. Their interactions are almost identical. The asymmetry of the ...
    Found op http://www2.slac.stanford.edu/vvc/glossary.html
    
    
16. 
    antimatter
    All particles of ordinary matter (electrons, protons, neutrons) have anti-matter partners that appear identical in all respects (e.g. mass, spin) except that they have the opposite electric charge. We believe that in the Big Bang equal quantities of matter and antimatter were created. The fact that ...
    Found op http://www.interactions.org/cms/?pid=1002289
    
    
17. 
    Antimatter
    (antiparticle) Species of subatomic particles that have the same mass and spin as normal particles, however, they have opposite electrical charges from their normal matter counterparts. In the case of antineutrons they are opposite of neutrons in magnetic moment. Positrons, which are the counterpart...
    Found op http://www.chemistry-dictionary.com/definition/antimatter+%28antiparticle%2
    
    
18. 
    Antimatter
    Matter consisting of particles with charges opposite that of ordinary matter. In antimatter, protons have a negative charge while electrons have a positive charge.
    Found op http://www.seasky.org/astronomy/astronomy-glossary.html
    
    
19. 
    antimatter
    1) A dangerous new weapon 2) Matter 3) Physicist's study 4) Substance
    Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/antimatter/1
    
    

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