antiparticle
1. [ noun ] (physics,high energy physics) a particle that has the same mass as another particle but has opposite values for its other properties; interaction of a particle and its antiparticle results in annihilation and the production of radiant energy
Related terms: elementary_particle antimatter
Similar spelling:   antipruritic
  antipathetic
  antiparallel
  antipathetical
  antibiotic
  antipyretic
  antiapartheid
  antiviral
  antipodal
  antiphonary
  antipsychotic
  antiepileptic
  antibiotic_drug