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Entry 1 sense Webster, 1913

electron-volt

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01 n. a unit of energy, being equal to the kinetic energy acquired by an electron when accelerated through a potential difference of one volt. I…
  1. 1.
    a unit of energy, being equal to the kinetic energy acquired by an electron when accelerated through a potential difference of one volt. It is equal to 1.602 x 10-19 Joules. It is abbreviated eV.