protium — English Dictionary

Noun

1. 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.

   Synonyms

   mul:H-1mul:¹Hhydrogenhydrogen-1hydrogen 1light hydrogennormal hydrogen

   Broader terms

   hydrogenmul:H

   Examples

   So far there are no differences among the protiums extracted at various labs, except for concentration levels.

2. An atom of this isotope.

   Examples

   This radioactive decay leaves behind a protium as well.