noun
a radioactive isotope of hydrogen with two neutrons and one proton in its nucleus
-
Tritium is a radioactive isotope of hydrogen with a nucleus containing two neutrons and one proton.
-
Scientists use tritium in various research experiments to study nuclear reactions.
-
I heard tritium is used in glow-in-the-dark keychains.
-
The tritium of innovation is what drives progress in technology.