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Noun: giga electron volt
  1. (physics) a unit of energy, 10^9 eV or about 1.602x10^-10 Joules
    - GeV, gigaelectron volt
Combining form: giga-  gi-gu
  1. One billion (10^9)
     
  2. (computing) a factor of 2^30, 1073741824

Encyclopedia: Giga-