protium
nounUK /ˈpɹəʊ.tiəm/ · US /ˈpɹoʊ.tiəm/
Etymology From proto- + -ium. From Ancient Greek πρῶτος (prôtos, “first”).
1
Natural sciences, Physical sciences, Physics The lightest and most common isotope of hydrogen, having a single proton and no neutrons: 11H. It is the only stable nuclide with no neutrons.
- So far there are no differences among the protiums extracted at various labs, except for concentration levels.
2
An atom of this isotope.
- This radioactive decay leaves behind a protium as well.
- Derived terms
- diprotium