Word.ws English Dictionary

protiums

protiums is the plural of protium.

Meaning of protium

Noun

protium (plural protiums)

  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.
    • 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.

Questions about protiums

What is protiums the plural of?
Protiums is the plural of protium.

Words near protiums in the dictionary

  1. protistologists
  2. protistology
  3. protiston
  4. protists
  5. protium
  6. protiums
  7. proto
  8. proto-
  9. Proto-Afrasian
  10. Proto-Afro-Asiatic
  11. Proto-Afroasiatic

Source and license

Adapted from Wiktionary: protiums (page history and authors); protium (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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