also: ゲブ
noun
giga electron volt
Unit of energy used in particle physics, equal to one billion electron volts.
この粒子のエネルギーは10GeVに達した。
The particle's energy reached 10 GeV.
素粒子の質量はGeV単位で表されることが多い。
The masses of elementary particles are often expressed in GeV.
From English 'giga electron volt', abbreviated GeV. The reading ジェブ reflects the English pronunciation of 'G', while ゲブ is a less common variant.