protium
UK /ˈpɹəʊ.tiəm/ · US /ˈpɹoʊ.tiəm/ noun
Forms protiums
- noun (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.”
- noun An atom of this isotope. “This radioactive decay leaves behind a protium as well.”
Synonyms
mul:H-1 mul:¹H hydrogen hydrogen-1 hydrogen 1 light hydrogen normal hydrogen genus Protium
Etymology
From proto- + -ium. From Ancient Greek πρῶτος (prôtos, “first”).
Sources: Wiktionary · WordNet 3.0 — from the Wiktionary entry “protium”, CC BY-SA 4.0. Details