antihydrogen definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The antimatter equivalent of hydrogen.
antihydrogen - Science Definition
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.