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tritium

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tritium

Main Entry:: tri·ti·um
Pronunciation:: \ˈtri-tē-əm, ˈtri-shē-\
Function:: noun
Etymology:: New Latin, from Greek tritos third — more at third
Date:: 1933

: 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

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