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A rare radioactive isotope of hydrogen, H-3, having one proton and two neutrons in the nucleus and a half-life of 12.3 years, prepared artificially for use as a tracer and as a constituent of hydrogen bombs.
(Elements & Compounds) a radioactive isotope of hydrogen, occurring in trace amounts in natural hydrogen and produced in a nuclear reactor. Tritiated compounds are used as tracers. Symbol: T or 3H; half-life: 12.5 years
[C20: New Latin, from Greek tritos third]
trit•i•um(ˈtrɪt i əm, ˈtrɪʃ-, ˈtrɪʃ əm)
an isotope of hydrogen having an atomic weight of three.
A radioactive isotope of hydrogen whose nucleus has one proton and two neutrons and whose atomic mass is about 3. Tritium is rare in nature but can be made artificially in nuclear reactions. It is used in thermonuclear weapons and sometimes as a tracer. See more at hydrogen.
An isotope of hydrogen. Its nucleus contains one proton and two neutrons and thus has a relative atomic mass of three.
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|Noun||1.||tritium - a radioactive isotope of hydrogen; atoms of tritium have three times the mass of ordinary hydrogen atoms|