tritium

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noun tri·ti·um \ˈtri-tē-əm, ˈtri-shē-\

Definition of tritium

  1. :  a radioactive isotope of hydrogen that has one proton and two neutrons in its nucleus and that has three times the mass of ordinary hydrogen —symbol T

Origin and Etymology of tritium

New Latin, from Greek tritos third — more at 1third


First Known Use: 1933


Medical Dictionary

tritium

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noun tri·ti·um \ˈtrit-ē-əm, ˈtrish-ē-\

Medical Definition of tritium

  1. :  a radioactive isotope of hydrogen that has three times the mass of ordinary hydrogen—symbol T


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