antihydrogen

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an·ti·hy·dro·gen

 (ăn′tē-hī′drə-jən, ăn′tī-)
n.
The antimatter equivalent of hydrogen.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

antihydrogen

(ˈæntɪˌhaɪdrədʒən)
n
(Chemistry) hydrogen in which the nucleus is an antiproton with an orbiting positron
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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References in periodicals archive ?
That laser technique won't work for antiprotons because anti-hydrogen is difficult to produce and harness.
Now the Swansea-based scientists from the Alpha (Anti-hydrogen Laser Physics Apparatus) project at Cern (the European Organisation for Nuclear Research) want to find out if anti-matter particles would fall away from Earth instead of towards it.
At least 38 anti-hydrogen atoms were produced and trapped for approximately one tenth of a second, giving researchers a long enough window of opportunity to study them.
Scientist Jeffrey Hangst, the spokesman for the team, said they had managed to trap 38 anti-hydrogen atoms individually.
For example, the known synthesized elements (their hyperbolas are more exact): anti-hydrogen, antideuterium, and anti-helium occupy symmetric places in both quadrants.
The anti-hydrogen bonds have thus been designated blue-shifting hydrogen bonds.
The cost-efficient anti-hydrogen sulfide system removes the substance from gas streams using a special absorbent, it said.
A bit more recently, announcements of the Bose-Einstein condensate and the possible creation of an anti-hydrogen atom have pushed the limits of matter.
Further study is motivated not only by fundamental interest but also because experiments may shed light on the physics of dense cores of gas giant planets like Jupiter, or guide efforts to create anti-hydrogen through the recombination of positrons and anti-protons.