A0334200 (ăn′tē-ăt′əm, ăn′tī-)n. An atom composed of antiparticles.Translationsantiátomo
antiatom
enUK
antiatom
[′an·tē‚ad·əm] (atomic physics) An atom made up of antiprotons, antineutrons, and positrons in the same way that an ordinary atom is made up of protons, neutrons, and electrons.