antiatom

[ an-tee-at-uhm, an-tahy- ]

nounPhysics.
  1. an atom of antimatter.

Origin of antiatom

1
First recorded in 1965–70; anti- + atom

Words Nearby antiatom

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How to use antiatom in a sentence

British Dictionary definitions for anti-atom

anti-atom

noun
  1. an atom composed of antiparticles, in which the nucleus contains antiprotons with orbiting positrons

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for antiatom

antiatom

[ ăntē-ăt′əm, ăn′tī- ]


  1. An atom composed of antiparticles. An antiatom consists of positrons, antiprotons, and antineutrons. It has the same mass and spin as an ordinary atom, and the same amount of charge and magnetic moment, but the charge and magnetic moment are the opposite of those of an ordinary atom.

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