anti hydrogen

Science Dictionary
antihydrogen   (ān'tē-hī'drə-jən, ān'tī-)  Pronunciation Key 
The antimatter that corresponds to hydrogen. Antihydrogen has been useful in studies of the relationship between matter and antimatter, because its matter equivalent (hydrogen) is one of the most studied and most well understood forms of matter.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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