Definition of tritium in English:
A radioactive isotope of hydrogen with a mass approximately three times that of the common protium isotope. (Symbol: T)
- Although many nuclei can be fused, this subject normally refers to fusion of hydrogen isotopes deuterium or tritium to form helium.
- Although tritium can be a gas, its most common form is in water, because, like non-radioactive hydrogen, radioactive tritium reacts with oxygen to form water.
- These products contain tiny glass vials filled with a radioactive gas such as tritium.
1930s: from modern Latin, from Greek tritos 'third'.
Definition of tritium in:
- British & World English dictionary
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