Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An atom composed of antiparticles.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun physics Any atom composed of antiparticles

Etymologies

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Examples

  • Aiming the lasers and microwaves precisely at the antiatoms using the right settings is very difficult right after the antiatoms are formed because they are in what's called an excited state - the positrons are orbiting the nucleus of the antiatom, but they're very far away, and they're constantly changing their orbit.

    CBC | Top Stories News 2011

  • In recent months, Fujiwara said, the ALPHA team has figured out how to create very cold antiparticles and mix them more gently to produce and trap antiatoms more efficiently, successfully trapping an average of one antiatom per trial.

    CBC | Top Stories News 2011

  • Aiming the lasers and microwaves precisely at the antiatoms using the right settings is very difficult right after the antiatoms are formed because they are in what's called an excited state - the positrons are orbiting the nucleus of the antiatom, but they're very far away, and they're constantly changing their orbit.

    CBC | Top Stories News 2011

  • In recent months, Fujiwara said, the ALPHA team has figured out how to create very cold antiparticles and mix them more gently to produce and trap antiatoms more efficiently, successfully trapping an average of one antiatom per trial.

    CBC | Top Stories News 2011

  • The simplest antiatom, antihydrogen, is made of an antiproton and a positron, the electron's antimatter counterpart.

    New Scientist - Online News 2010

  • The simplest antiatom, antihydrogen, is made of an antiproton and a positron, the electron's antimatter counterpart.

    New Scientist - Online News 2010

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