noun
- a radioactive isotope of hydrogen with one proton and two neutrons in its nucleus
Usage: chemistry; physics
Examples
- Tritium is used in nuclear fusion reactions.
- The half-life of tritium is approximately 12.3 years.
- Scientists detected tritium in the water samples.
- Tritium glows faintly due to its radioactive decay.
- Nuclear weapons testing released tritium into the atmosphere.
- The laboratory measured tritium levels in the environment.